Das Periodensystem der Elemente online
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pKs-Werte
pKs-Werte
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Alphabetisch
Ordnungszahl
pKs-Werte
#
OZ
Name
pKs-Werte
1.
1
Wasserstoff (H
2
)
39
2.
3
Lithium-Ion (Li
+
)
13.82
3.
4
Beryllium-Ion (Be
2+
)
5.75
4.
4
Hydroxo-Beryllium-Ion (Be(OH)
+
)
8.60
5.
4
Berylliumhydroxid (Be(OH)
2
)
10.46
6.
4
Trihydroxo-Beryllat-Ion (Be(OH)
3
-
)
13.54
7.
5
Orthoborsäure (B(OH)
3
)
9.25
8.
5
Metaborsäure (HBO
2
)
9.12
9.
5
Tetraborsäure (H
2
B
4
O
7
)
4
10.
5
Hydrogentetraborat-Ion (HB
4
O
7
-
)
9
11.
5
Tetrafluoroborsäure (HBF
4
)
-0.4
12.
6
Methan (CH
4
)
44
13.
6
Ethan (C
2
H
6
)
50
14.
6
Propan (C
3
H
8
)
51
15.
6
Ethen (C
2
H
4
)
44
16.
6
Propen (C
3
H
6
)
43
17.
6
Ethin (C
2
H
2
)
22
18.
6
Methanal (HCHO)
13.3
19.
6
Ethanal-Acidium-Ion (CH
3
CHOH
+
)
-8
20.
6
Ethanal (CH
3
CHO)
14.5
21.
6
Benzaldehyd-Acidium-Ion (C
6
H
5
CHOH
+
)
-6.2
22.
6
Ameisensäure (HCOOH)
3.75
23.
6
Peroxoameisensäure (HC(O
2
)OH)
7.10
24.
6
Acetat-Acidium-Ion (CH
3
C(OH)
2
+
)
-6
25.
6
Essigsäure (CH
3
COOH)
4.76
26.
6
Fluoressigsäure (CFH
2
COOH)
2.57
27.
6
Chloressigsäure (CClH
2
COOH)
2.83
28.
6
Bromessigsäure (CBrH
2
COOH)
2.87
29.
6
Iodessigsäure (CIH
2
COOH)
3.13
30.
6
Difluoressigsäure (CF
2
HCOOH)
1.24
31.
6
Dichloressigsäure (CCl
2
HCOOH)
1.29
32.
6
Dibromessigsäure (CBr
2
HCOOH)
1.39
33.
6
Diiodessigsäure (CI
2
HCOOH)
1.49
34.
6
Trifluoressigsäure (CF
3
COOH)
0.23
35.
6
Trichloressigsäure (CCl
3
COOH)
0.65
36.
6
Tribromessigsäure (CBr
3
COOH)
0.72
37.
6
Triiodessigsäure (CI
3
COOH)
0.90
38.
6
Glycolsäure (CH
2
(OH)COOH)
3.83
39.
6
Glycinacidium-Ion ((NH
3
)CH
2
COOH
+
)
2.34
40.
6
Glycin ((NH
3
)CH
2
COO)
9.60
41.
6
Peroxoessigsäure (CH
3
C(O
2
)OH)
8.20
42.
6
Propionsäure (C
2
H
5
COOH)
4.87
43.
6
Milchsäure (C
2
H
4
(OH)COOH)
3.90
44.
6
Alaninacidium-Ion (CH
3
(NH
3
)CHCOOH
+
)
2.35
45.
6
Alanin (CH
3
(NH
3
)CHCOO)
9.87
46.
6
Peroxopropionsäure (C
2
H
5
C(O
2
)OH)
8.10
47.
6
Acrylsäure (C
2
H
3
COOH)
4.23
48.
6
Buttersäure (C
3
H
7
COOH)
4.82
49.
6
Peroxobuttersäure (C
3
H
7
C(O
2
)OH)
8.20
50.
6
Crotonsäure (C
3
H
5
COOH)
4.69
51.
6
Valeriansäure (C
4
H
9
COOH)
4.84
52.
6
Capronsäure (C
5
H
11
COOH)
4.88
53.
6
Önanthsäure (C
6
H
13
COOH)
4.89
54.
6
Caprylsäure (C
7
H
15
COOH)
4.89
55.
6
Pelargonsäure (C
8
H
17
COOH)
4.95
56.
6
Caprinsäure (C
9
H
19
COOH)
4.90
57.
6
Oxalsäure ((COOH)
2
)
1.23
58.
6
Hydrogenoxalat-Ion (H(COOH)
2
-
)
4.19
59.
6
Malonsäure (CH
2
(COOH)
2
)
2.83
60.
6
Hydrogenmalonat-Ion (CH
2
H(COO)
2
-
)
5.69
61.
6
Tartronsäure ((CHOH)(COOH)
2
)
2.30
62.
6
Hydrogentartronat-Ion ((CHOH)H(COO)
2
-
)
4.98
63.
6
Bernsteinsäure ((CH
2
)
2
(COOH)
2
)
4.16
64.
6
Hydrogensuccinat-Ion ((CH
2
)
2
H(COO)
2
-
)
5.61
65.
6
Äpfelsäure (CH
2
CHOH(COOH)
2
)
3.46
66.
6
Hydrogenmalat-Ion (CH
2
CHOH-H(COO)
2
-
)
5.10
67.
6
Weinsäure ((CHOH)
2
(COOH)
2
)
2.98
68.
6
Hydrogentartrat-Ion ((CHOH)
2
H(COO)
2
-
)
4.34
69.
6
Glutarsäure ((CH
2
)
3
(COOH)
2
)
4.33
70.
6
Hydrogenglutarat-Ion ((CH
2
)
3
H(COO)
2
-
)
5.57
71.
6
Adipinsäure ((CH
2
)
4
(COOH)
2
)
4.43
72.
6
Hydrogenadipat-Ion ((CH
2
)
4
H(COO)
2
-
)
5.42
73.
6
Pimelinsäure ((CH
2
)
5
(COOH)
2
)
4.47
74.
6
Hydrogenpimelat-Ion ((CH
2
)
5
H(COO)
2
-
)
5.52
75.
6
Korksäure ((CH
2
)
6
(COOH)
2
)
4.51
76.
6
Hydrogensuberat-Ion ((CH
2
)
6
H(COO)
2
-
)
5.40
77.
6
Azelainsäure ((CH
2
)
7
(COOH)
2
)
4.53
78.
6
Hydrogenazelat-Ion ((CH
2
)
7
H(COO)
2
-
)
5.60
79.
6
Sebacinsäure ((CH
2
)
8
(COOH)
2
)
4.72
80.
6
Hydrogensebacat-Ion ((CH
2
)
8
H(COO)
2
-
)
5.45
81.
6
Citronensäure (C
6
H
8
O
7
)
3.13
82.
6
Dihydrogencitrat-Ion (C
6
H
7
O
7
-
)
4.76
83.
6
Hydrogencitrat-Ion (C
6
H
6
O
7
2-
)
6.4
84.
6
Benzoat-Acidium-Ion (C
6
H
5
C(OH)
2
+
)
-4.7
85.
6
Benzoesäure (C
6
H
5
COOH)
4.21
86.
6
Salicylsäure (C
6
H
4
(OH)COOH)
2.75
87.
6
Salicylat(-)-Ion (C
6
H
4
(OH)COO
-
)
12.38
88.
6
Mellitsäure (C
6
(COOH)
6
)
1.40
89.
6
Pentahydrogenmellitat-Ion (C
6
(COOH)
5
COO
-
)
2.19
90.
6
Tetrahydrogenmellitat-Ion (C
6
(COOH)
4
(COO)
2
2-
)
3.31
91.
6
Trihydrogenmellitat-Ion (C
6
(COOH)
3
(COO)
3
3-
)
4.78
92.
6
Dihydrogenmellitat-Ion (C
6
(COOH)
2
(COO)
4
4-
)
5.89
93.
6
Hydrogenmellitat-Ion (C
6
(COOH)(COO)
5
5-
)
6.96
94.
6
Kohlensäure (H
2
CO
3
)
6.46
95.
6
Hydrogencarbonat-Ion (HCO
3
-
)
10.4
96.
6
Peroxokohlensäure (H
2
CO(O
2
))
4
97.
6
Hydrogenperoxocarbonat-Ion (HCO(O
2
)
-
)
10.6
98.
6
Trithiokohlensäure (H
2
CS
3
)
2.68
99.
6
Hydrogentrithiocarbonat-Ion (HCS
3
-
)
8.18
100.
6
Triselenokohlensäure (H
2
CSe
3
)
1.16
101.
6
Hydrogentriselenocarbonat-Ion (HCSe
3
-
)
7.70
102.
6
Blausäure (HCN)
9.21
103.
6
Cyansäure (HOCN)
3.46
104.
6
Isocyansäure (HNCO)
3.92
105.
6
Thiocyansäure (HSCN)
-1.85
106.
6
Isothiocyansäure (HNCS)
-1.28
107.
6
Hypothiocyanitige Säure (HOSCN)
5.30
108.
7
Ammonium-Ion (NH
4
+
)
9.21
109.
7
Ammoniak (NH
3
)
35
110.
7
Hydroxylammonium-Ion (NH
3
OH
+
)
8.20
111.
7
Hydroxylamin (NH
2
OH)
13.7
112.
7
Methylammonium-Ion (CH
3
NH
3
+
)
10.66
113.
7
Dimethylammonium-Ion ((CH
3
)
2
NH
2
+
)
10.73
114.
7
Trimethylammonium-Ion ((CH
3
)
3
NH
+
)
9.81
115.
7
Ethylammonium-Ion (C
2
H
5
NH
3
+
)
10.81
116.
7
Diethylammonium-Ion ((C
2
H
5
)
2
NH
2
+
)
10.49
117.
7
Triethylammonium-Ion ((C
2
H
5
)
3
NH
+
)
11.01
118.
7
Propylammonium-Ion (C
3
H
7
NH
3
+
)
10.57
119.
7
Dipropylammonium-Ion ((C
3
H
7
)
2
NH
2
+
)
10.91
120.
7
Tripropylammonium-Ion ((C
3
H
7
)
3
NH
+
)
10.66
121.
7
Phenylammonium-Ion (C
6
H
5
NH
3
+
)
4.63
122.
7
Diphenylammonium-Ion ((C
6
H
5
)
2
NH
2
+
)
0.78
123.
7
Triphenylammonium-Ion ((C
6
H
5
)
3
NH
+
)
-5
124.
7
Nitromethan (NO
2
CH
3
)
10.2
125.
7
Nitramin (NO
2
NH
2
)
6.60
126.
7
Dihydrazinium-Ion (N
2
H
6
2+
)
-0.88
127.
7
Hydrazinium-Ion (N
2
H
5
+
)
7.93
128.
7
Hydrazin (N
2
H
4
)
24.7
129.
7
Methylhydrazidium-Ion (CH
3
N
2
H
4
+
)
7.87
130.
7
Ethylhydrazidium-Ion (C
2
H
5
N
2
H
4
+
)
7.99
131.
7
Phenylhydrazidium-Ion (C
6
H
5
N
2
H
4
+
)
5.21
132.
7
Harnstoff-Acidium-Ion (CO(NH
2
)(NH
3
)
+
)
0.18
133.
7
Stickstoffwasserstoffsäure (HN
3
)
4.76
134.
7
Hyposalpetrige Säure ((HNO)
2
)
7.21
135.
7
Hydrogenhyponitrit-Ion (H(NO)
2
-
)
11.54
136.
7
Nitritazidium-Ion (H
2
NO
2
+
)
-7
137.
7
Salpetrige Säure (HNO
2
)
3.35
138.
7
Salpetersäure (HNO
3
)
-1.33
139.
7
Peroxohyposalpetrige Säure (H
2
N
2
O(O
2
))
2.51
140.
7
Hydrogenperoxohyponitrit-Ion (HN
2
O(O
2
)
-
)
9.70
141.
7
Peroxosalpetrige Säure (HNO(O
2
))
6.8
142.
7
Peroxosalpetersäure (HNO
2
(O
2
))
-5
143.
8
Hydronium-Ion (H
3
O
+
)
-1.76
144.
8
Wasser (H
2
O)
15.76
145.
8
Hydroxid-Ion (OH
-
)
29
146.
8
Methyloxonium-Ion (CH
3
OH
2
+
)
-2.2
147.
8
Methanol (CH
3
OH)
15.54
148.
8
Dimethyloxonium-Ion ((CH
3
)
2
OH
+
)
-3.8
149.
8
Ethyloxonium-Ion (C
2
H
5
OH
2
+
)
-2.4
150.
8
Ethanol (C
2
H
5
OH)
15.9
151.
8
Diethyloxonium-Ion ((C
2
H
5
)
2
OH
+
)
-3.5
152.
8
Propyloxonium-Ion (C
3
H
7
OH
2
+
)
-2.6
153.
8
Propanol (C
3
H
7
OH)
16.2
154.
8
Isopropyloxonium (CH
3
(CHOH
2
)CH
3
+
)
-3.2
155.
8
Isopropanol (CH
3
(CHOH)CH
3
)
17.1
156.
8
t-Butyloxoniumion ((CH
3
)
3
COH
2
+
)
-3.8
157.
8
t-Butanol ((CH
3
)
3
COH)
19
158.
8
Phenyloxonium-Ion (C
6
H
5
OH
2
+
)
-6.7
159.
8
Phenol (C
6
H
5
OH)
9.99
160.
8
Hydroperoxonium-Ion (H
3
O
2
+
)
-7.7
161.
8
Wasserstoffperoxid (H
2
O
2
)
11.62
162.
8
Hydrogenperoxid-Ion (HO
2
-
)
16.8
163.
8
Methylhydroperoxid (CH
3
OOH)
11.5
164.
8
Ethylhydroperoxid (C
2
H
5
OOH)
11.8
165.
8
Isopropylhydroperoxid (CH
3
(CHOOH)CH
3
)
12.1
166.
8
Trioxidan (H
2
O
3
)
9.5
167.
8
Wasserstoffhyperoxid (HO
2
)
4.7
168.
8
Wasserstoffozonid (HO
3
)
8.2
169.
9
Fluoronium-Ion (H
2
F
+
)
-6
170.
9
Flusssäure (HF)
3.14
171.
11
Natrium-Ion (Na
+
)
14.56
172.
12
Magnesium-Ion (Mg
2+
)
11.44
173.
12
Hydroxo-Magnesium-Ion (Mg(OH)
+
)
12.20
174.
13
Aluminium-Ion (Al
3+
)
4.89
175.
13
Hydroxo-Aluminium-Ion (Al(OH)
2+
)
5.43
176.
13
Dihydroxo-Aluminium-Ion (Al(OH)
2
+
)
5.86
177.
13
Aluminiumhydroxid (Al(OH)
3
)
11.22
178.
14
Silan (SiH
4
)
35
179.
14
Metakieselsäure (H
2
SiO
3
)
9.51
180.
14
Hydrogenmetasilicat-Ion (HSiO
3
-
)
11.77
181.
14
Orthokieselsäure (H
4
SiO
4
)
9.66
182.
14
Trihydrogenorthosilicat-Ion (H
3
SiO
4
-
)
11.77
183.
14
Dihydrogenorthosilicat-Ion (H
2
SiO
4
2-
)
13
184.
14
Hydrogenorthosilicat-Ion (HSiO
4
3-
)
14
185.
14
Hexaflurokieselsäure (H
2
SiF
6
)
-3
186.
14
Hydrogenhexafluorosilicat-Ion (HSiF
6
-
)
1.92
187.
15
Phosponium-Ion (PH
4
+
)
-14
188.
15
Phosphan (PH
3
)
23
189.
15
Methylphosphonium-Ion (CH
3
PH
3
+
)
2.70
190.
15
Trimethylphosphonium-Ion ((CH
3
)
3
PH
+
)
8.65
191.
15
Triphenylphosphonium-Ion ((C
6
H
5
)
3
PH
+
)
2.73
192.
15
Diphosphan (P
2
H
4
)
26
193.
15
Phosphinazidium-Ion (H
4
PO
2
+
)
-1.05
194.
15
Hypophosphorige Säure (H
3
PO
2
)
2.23
195.
15
Methylphosphinsäure (HPO
2
(CH
3
))
3.08
196.
15
Ethylphosphinsäure (HPO
2
(C
2
H
5
))
3.29
197.
15
Propylphosphinsäure (HPO
2
(C
3
H
7
))
3.46
198.
15
Butylphosphinsäure (HPO
2
(C
4
H
9
))
3.41
199.
15
Phosphonazidium-Ion (H
4
PO
3
+
)
-2.02
200.
15
Phosphorige Säure (H
3
PO
3
)
1.92
201.
15
Hydrogenphosphit-Ion (H
2
PO
3
-
)
6.59
202.
15
Hypodiphosphorsäure (H
4
P
2
O
6
)
2.22
203.
15
Trihydrogenhypodiphosphat-Ion (H
3
P
2
O
6
-
)
2.82
204.
15
Dihydrogenhypodiphosphat-Ion (H
2
P
2
O
6
2-
)
7.27
205.
15
Hydrogenhypodiphosphat-Ion (HP
2
O
6
3-
)
10.03
206.
15
Phosphatazidium-Ion (H
4
PO
4
+
)
-5
207.
15
Phosphorsäure (H
3
PO
4
)
2.13
208.
15
Dihydrogenphosphat-Ion (H
2
PO
4
-
)
7.21
209.
15
Hydrogenphosphat-Ion (HPO
4
2-
)
12.36
210.
15
Amidophosphat-Azidium-Ion (H
2
PO
3
(NH
3
)
+
)
-0.9
211.
15
Amidophosphonsäure (H
2
PO
3
(NH
2
))
2.74
212.
15
Hydrogenamidophosphonat-Ion (HPO
3
(NH
2
)
-
)
8.10
213.
15
Diamidophosphonsäure (HPO
2
(NH
2
)
2
)
4.83
214.
15
Methylphosphonsäure (H
2
PO
3
(CH
3
))
2.38
215.
15
Hydrogenmethylphosphonat-Ion (HPO
3
(CH
3
)
-
)
7.74
216.
15
Dimethylphosphonsäure (HPO
2
(CH
3
)
2
)
1.29
217.
15
Ethylphosphonsäure (H
2
PO
3
(C
2
H
5
))
2.43
218.
15
Hydrogenethylphosphonat-Ion (HPO
3
(C
2
H
5
)
-
)
8.05
219.
15
Propylphosphonsäure (H
2
PO
3
(C
3
H
7
))
2.49
220.
15
Hydrogenpropylphosphonat-Ion (HPO
3
(C
3
H
7
)
-
)
8.18
221.
15
Butylphosphonsäure (H
2
PO
3
(C
4
H
9
))
2.79
222.
15
Hydrogenbutylphosphonat-Ion (HPO
3
(C
4
H
9
)
-
)
8.88
223.
15
Phenylphosphonsäure (H
2
PO
3
(C
6
H
5
))
1.83
224.
15
Hydrogenphenylphosphonat-Ion (HPO
3
(C
6
H
5
)
-
)
7.07
225.
15
Thiophosphorsäure (H
3
PSO
3
)
1.79
226.
15
Dihydrogenthiophosphat-Ion (H
2
PSO
3
-
)
5.43
227.
15
Hydrogenthiophosphat-Ion (HPSO
3
2-
)
10.08
228.
15
Tetrathiophosphorsäure (H
3
PS
4
)
1.5
229.
15
Dihydrogentetrathiophosphat-Ion (H
2
PS
4
-
)
3.5
230.
15
Hydrogentetrathiophosphat-Ion (HPS
4
2-
)
6.6
231.
15
Selenophosphorsäure (H
3
PSeO
3
)
0.02
232.
15
Dihydrogenselenophosphat-Ion (H
2
PSeO
3
-
)
3.12
233.
15
Hydrogenselenophosphat-Ion (HPSeO
3
2-
)
6.30
234.
15
Diphosphorsäure (H
4
P
2
O
7
)
1.52
235.
15
Trihydrogendiphosphat-Ion (H
3
P
2
O
7
-
)
2.36
236.
15
Dihydrogendiphosphat-Ion (H
2
P
2
O
7
2-
)
6.60
237.
15
Hydrogendiphosphat-Ion (HP
2
O
7
3-
)
9.25
238.
15
Imidodiphosphorsäure (H
4
P
2
O
6
NH)
2
239.
15
Trihydrogenimidodiphosphat-Ion (H
3
P
2
O
6
NH
-
)
2.85
240.
15
Dihydrogenimidodiphosphat-Ion (H
2
P
2
O
6
NH
2-
)
7.08
241.
15
Hydrogenimidodiphosphat-Ion (HP
2
O
6
NH
3-
)
9.72
242.
15
Triphosphorsäure (H
5
P
3
O
9
)
1
243.
15
Tetrahydrogentriphosphat-Ion (H
4
P
3
O
9
-
)
1.7
244.
15
Trihydrogentriphosphat-Ion (H
3
P
3
O
9
2-
)
2
245.
15
Dihydrogentriphosphat-Ion (H
2
P
3
O
9
3-
)
5.83
246.
15
Hydrogentriphosphat-Ion (HP
3
O
9
4-
)
8.51
247.
15
Tetraphosphorsäure (H
6
P
4
O
11
)
0.5
248.
15
Pentahydrogentetraphosphat-Ion (H
5
P
4
O
11
-
)
1
249.
15
Tetrahydrogentetraphosphat-Ion (H
4
P
4
O
11
2-
)
1.36
250.
15
Trihydrogentetraphosphat-Ion (H
3
P
4
O
11
3-
)
2.23
251.
15
Dihydrogentetraphosphat-Ion (H
2
P
4
O
11
4-
)
6.63
252.
15
Hydrogentetraphosphat-Ion (HP
4
O
11
5-
)
8.34
253.
15
Peroxophosphorsäure (H
3
PO
5
)
1.1
254.
15
Dihydrogenperoxophosphat-Ion (H
2
PO
5
-
)
5.5
255.
15
Hydrogenperoxophosphat-Ion (HPO
5
2-
)
12.8
256.
15
Peroxodiphosphorsäure (H
4
P
2
O
8
)
-3
257.
15
Trihydrogenperoxodiphosphat (H
3
P
2
O
8
-
)
0.5
258.
15
Dihydrogenperoxodiphosphat (H
2
P
2
O
8
2-
)
5.18
259.
15
Hydrogenperoxodiphosphat (HP
2
O
8
3-
)
7.67
260.
15
Monofluorophosphorsäure (H
2
PFO
3
)
0.50
261.
15
Hydrogenmonofluorophosphat-Ion (HPFO
3
-
)
5.12
262.
15
Difluorophosphorsäure (HPF
2
O
2
)
-1.50
263.
15
Hexafluorophosphorsäure (HPF
6
)
-10
264.
16
Schwefelwasserstoff (H
2
S)
7.06
265.
16
Hydrogensulfid-Ion (HS
-
)
12.92
266.
16
Methylsulfonium-Ion (CH
3
SH
2
+
)
-6.8
267.
16
Methanthiol (CH
3
SH)
10.4
268.
16
Ethanthiol (C
2
H
5
SH)
10.50
269.
16
Propanthiol (C
3
H
7
SH)
10.65
270.
16
Butanthiol (C
4
H
9
SH)
10.66
271.
16
Thiophenol (C
6
H
5
SH)
6.52
272.
16
Disulfan (H
2
S
2
)
5
273.
16
Hydrogendisulfid-Ion (HS
2
-
)
9.7
274.
16
Trisulfan (H
2
S
3
)
4.2
275.
16
Hydrogentrisulfid-Ion (HS
3
-
)
7.5
276.
16
Tetrasulfan (H
2
S
4
)
3.8
277.
16
Hydrogentetrasulfid-Ion (HS
4
-
)
6.3
278.
16
Pentasulfan (H
2
S
5
)
3.5
279.
16
Hydrogenpentasulfid-Ion (HS
5
-
)
5.7
280.
16
Hexasulfan (H
2
S
6
)
3.2
281.
16
Hydrogenhexasulfid-Ion (HS
6
-
)
5.2
282.
16
Thioschwefelsäure (H
2
S
2
O
3
)
0.6
283.
16
Hydrogenthiosulfat-Ion (HS
2
O
3
-
)
1.6
284.
16
Dithionige Säure (H
2
S
2
O
4
)
0.35
285.
16
Hydrogendithionit-Ion (HS
2
O
4
-
)
2.45
286.
16
Schweflige Säure (H
2
SO
3
)
1.92
287.
16
Hydrogensulfit-Ion (HSO
3
-
)
7.21
288.
16
Methylsulfinsäure ((CH
3
)SO
2
H)
2.28
289.
16
Phenylsulfinsäure ((C
6
H
5
)SO
2
H)
1.84
290.
16
Dithionsäure (H
2
S
2
O
6
)
-3.4
291.
16
Hydrogendithionat-Ion (HS
2
O
6
-
)
-0.2
292.
16
Sulfatazidium-Ion (H
3
SO
4
+
)
-8.3
293.
16
Schwefelsäure (H
2
SO
4
)
-3
294.
16
Hydrogensulfat-Ion (HSO
4
-
)
1.92
295.
16
Fluorosulfonsäure (FSO
3
H)
-14
296.
16
Chlorosulfonsäure (ClSO
3
H)
-10.43
297.
16
Amidosulfonsäure (NH
2
SO
3
H)
0.99
298.
16
Hydrazidosulfonsäure (N
2
H
3
SO
3
H)
3.85
299.
16
Methansulfonsäure (CH
3
SO
3
H)
-1.92
300.
16
Ethansulfonsäure (C
2
H
5
SO
3
H)
-1.68
301.
16
1-Propansulfonsäure (CH
3
(CH
2
)
2
SO
3
H)
-1.49
302.
16
2-Propansulfonsäure (CH
3
(CHSO
3
H)CH
3
)
-1.79
303.
16
Butansulfonsäure (C
4
H
9
SO
3
H)
-1.68
304.
16
Octansulfonsäure (C
8
H
19
SO
3
H)
-1.41
305.
16
Benzolsulfonsäure (C
6
H
5
SO
3
H)
-2.5
306.
16
p-Toluolsulfonsäure (C
6
H
4
CH
3
SO
3
H)
-2.8
307.
16
Trifluoromethansulfonsäure (CF
3
SO
3
H)
-5.21
308.
16
Pentafluoroethansulfonsäure (C
2
F
5
SO
3
H)
-5.10
309.
16
Heptafluoropropansulfonsäure (C
3
F
7
SO
3
H)
-5.00
310.
16
Dischwefelsäure (H
2
S
2
O
7
)
-12
311.
16
Hydrogendisulfat-Ion (HS
2
O
7
-
)
-8
312.
16
Peroxoschwefelsäure (H
2
SO
5
)
0.8
313.
16
Hydrogenperoxosulfat-Ion (HSO
5
-
)
9.86
314.
16
Peroxodischwefelsäure (H
2
S
2
O
8
)
-3.5
315.
16
Hydrogenperoxodisulfat-Ion (HS
2
O
8
-
)
-2.8
316.
17
Salzsäure (HCl)
-6
317.
17
Hypochloritazidium-Ion (H
2
OCl
+
)
-3.5
318.
17
Hypochlorige Säure (HOCl)
7.54
319.
17
Chlorige Säure (HClO
2
)
1.97
320.
17
Chlorsäure (HClO
3
)
-2.7
321.
17
Perchlorsäure (HClO
4
)
-10
322.
17
Perchlorylamin (ClO
3
(NH
2
))
3.7
323.
17
Perchlorylamid (ClO
3
(NH)
-
)
8.6
324.
19
Kalium-Ion (K
+
)
15.1
325.
20
Calcium-Ion (Ca
2+
)
11.57
326.
20
Hydroxo-Calcium-Ion (Ca(OH)
+
)
12.63
327.
21
Scandium-Ion (Sc
3+
)
4.93
328.
21
Hydroxo-Scandium-Ion (Sc(OH)
2+
)
5.5
329.
21
Dihydroxo-Scandium-Ion (Sc(OH)
2
+
)
6.4
330.
21
Scandiumhydroxid (Sc(OH)
3
)
9.6
331.
22
Titan(III)-Ion (Ti
3+
)
2.55
332.
22
Titan(IV)-Ion (Ti
4+
)
-4
333.
22
Hydroxo-Titan(IV)-Ion (Ti(OH)
3+
)
1.80
334.
22
Titanyl(IV)-Ion (TiO
2+
)
2.1
335.
22
Hydroxotitanyl(IV)-Ion (TiO(OH)
+
)
2.4
336.
22
Titanyl(IV)dihydroxid (TiO(OH)
2
)
7.0
337.
22
Hexafluorotitan(IV)säure (H
2
TiF
6
)
2.14
338.
23
Vanadium(II)-Ion (V
2+
)
6.85
339.
23
Vanadium(III)-Ion (V
3+
)
2.92
340.
23
Hydroxo-Vanadium(III)-Ion (V(OH)
2+
)
3.41
341.
23
Dihydroxo-Vanadium(III)-Ion (V(OH)
2
+
)
4.10
342.
23
Vanadyl(IV)-Ion (VO
2+
)
5.66
343.
23
Hydroxovanadyl(IV)-Ion (VO(OH)
+
)
6.34
344.
23
Vanadyl(IV)hydroxid (VO(OH)
2
)
5.70
345.
23
Metavanadium(V)säure (HVO
3
)
3.80
346.
23
Vanadyl(V)-Ion (VO
2
+
)
1.83
347.
23
Orthovanadiumsäure (H
3
VO
4
)
2.6
348.
23
Dihydrogenorthovanadat(V)-Ion (H
2
VO
4
-
)
7.92
349.
23
Hydrogenorthovanadat(V)-Ion (HVO
4
2-
)
13.27
350.
24
Chrom(II)-Ion (Cr
2+
)
10.0
351.
24
Chrom(III)-Ion (Cr
3+
)
3.95
352.
24
Hydroxo-Chrom(III)-Ion (Cr(OH)
2+
)
4.4
353.
24
Dihydroxo-Chrom(III)-Ion (Cr(OH)
2
+
)
5.7
354.
24
Chrom(III)hydroxid (Cr(OH)
3
)
9.1
355.
24
Chromsäure (H
2
CrO
4
)
-0.61
356.
24
Hydrogenchromat-Ion (HCrO
4
-
)
6.45
357.
24
Dichromsäure (H
2
Cr
2
O
7
)
-4.5
358.
24
Hydrogendichromat-Ion (HCr
2
O
7
-
)
0.07
359.
24
Perchrom(VI)säure (H
2
CrO
5
)
4.95
360.
25
Pentacarbonylmangan(-I)säure (HMn(CO)
5
)
7.1
361.
25
Mangan(II)-Ion (Mn
2+
)
10.59
362.
25
Hydroxo-Mangan(II)-Ion (Mn(OH)
+
)
12
363.
25
Mangan(II)hydroxid (Mn(OH)
2
)
14
364.
25
Mangan(III)-Ion (Mn
3+
)
3.5
365.
25
Mangan(VI)säure (H
2
MnO
4
)
5
366.
25
Hydrogenmanganat(VI)-Ion (HMnO
4
-
)
10.15
367.
25
Permangansäure (HMnO
4
)
-2.25
368.
26
Tetracarbonyleisen(-II)säure (H
2
Fe(CO)
4
)
4.4
369.
26
Hydrogentetracarbonylferrat(-II)-Ion (HFe(CO)
4
-
)
14
370.
26
Eisen(II)-Ion (Fe
2+
)
9.50
371.
26
Hydroxo-Eisen(II)-Ion (Fe(OH)
+
)
11.07
372.
26
Eisen(II)hydroxid (Fe(OH)
2
)
11.93
373.
26
Trihydroxo-Ferrat(II)-Ion (Fe(OH)
3
-
)
15
374.
26
Eisen(III)-Ion (Fe
3+
)
2.83
375.
26
Hydroxo-Eisen(III)-Ion (Fe(OH)
2+
)
4.59
376.
26
Dihydroxo-Eisen(III)-Ion (Fe(OH)
2
+
)
6.89
377.
26
Eisen(VI)säure (H
2
FeO
4
)
3.50
378.
26
Hydrogenferrat(VI)-Ion (HFeO
4
-
)
7.23
379.
27
Tetracarbonylcobalt(-I)säure (HCo(CO)
4
)
1
380.
27
Kobalt(II)-Ion (Co
2+
)
9.47
381.
27
Hydroxo-Kobalt(II)-Ion (Co(OH)
+
)
9.63
382.
27
Kobalt(II)hydroxid (Co(OH)
2
)
12.4
383.
27
Trihydroxo-Cobaltat(II)-Ion (Co(OH)
3
-
)
14.8
384.
27
Kobalt(III)-Ion (Co
3+
)
1.75
385.
28
Nickel(II)-Ion (Ni
2+
)
9.86
386.
28
Hydroxo-Nickel(II)-Ion (Ni(OH)
+
)
10.22
387.
28
Nickel(II)hydroxid (Ni(OH)
2
)
10.88
388.
28
Trihydroxoniccolat(II)-Ion (Ni(OH)
3
-
)
13.67
389.
29
Kupfer(II)-Ion (Cu
2+
)
7.42
390.
29
Hydroxo-Kupfer(II)-Ion (Cu(OH)
+
)
8.5
391.
29
Kupfer(II)hydroxid (Cu(OH)
2
)
10
392.
29
Hydrogencuprat(II)-Ion (HCuO
2
-
)
13.1
393.
30
Zink-Ion (Zn
2+
)
8.96
394.
30
Hydroxo-Zink-Ion (Zn(OH)
+
)
8.99
395.
30
Zinkhydroxid (Zn(OH)
2
)
10.11
396.
30
Trihydroxo-Zincat-Ion (Zn(OH)
3
-
)
12.07
397.
31
Gallium-Ion (Ga
3+
)
2.92
398.
31
Hydroxo-Gallium-Ion (Ga(OH)
2+
)
3.77
399.
31
Dihydroxo-Gallium-Ion (Ga(OH)
2
+
)
4.75
400.
31
Galliumhydroxid (Ga(OH)
3
)
6.3
401.
32
German (GeH
4
)
25
402.
32
Metagermaniumsäure (H
2
GeO
3
)
8.59
403.
32
Hydrogenmetagermanat-Ion (HGeO
3
-
)
12.72
404.
32
Orthogermaniumsäure (H
4
GeO
4
)
8.68
405.
32
Trihydrogenorthogermanat-Ion (H
3
GeO
4
-
)
12.7
406.
32
Dihydrogenorthogermanat-Ion (H
2
GeO
4
2-
)
15
407.
32
Hydrogenorthogermanat-Ion (HGeO
4
3-
)
15
408.
33
Arsan (AsH
3
)
20
409.
33
Metaarsenige Säure (HAsO
2
)
9.28
410.
33
Dihydroxo-Arsen(III)-Ion (As(OH)
2
+
)
-0.34
411.
33
Arsenige Säure (H
3
AsO
3
)
9.21
412.
33
Dihydrogenarsenit-Ion (H
2
AsO
3
-
)
13.52
413.
33
Hydrogenarsenit-Ion (HAsO
3
2-
)
13.98
414.
33
Arsensäure (H
3
AsO
4
)
2.25
415.
33
Dihydrogenarsenat-Ion (H
2
AsO
4
-
)
6.77
416.
33
Hydrogenarsenat-Ion (HAsO
4
2-
)
11.53
417.
33
Methylarsonsäure (H
2
AsO
3
(CH
3
))
3.41
418.
33
Hydrogenmethylarsonat-Ion (HAsO
3
(CH
3
)
-
)
8.18
419.
33
Ethylarsonsäure (H
2
AsO
3
(C
2
H
5
))
3.89
420.
33
Hydrogenethylarsonat-Ion (HAsO
3
(C
2
H
5
)
-
)
8.35
421.
33
Propylarsonsäure (H
2
AsO
3
(C
3
H
7
))
4.21
422.
33
Hydrogenpropylarsonat-Ion (HAsO
3
(C
3
H
7
)
-
)
9.09
423.
33
Butylarsonsäure (H
2
AsO
3
(C
4
H
9
))
4.23
424.
33
Hydrogenbutylarsonat-Ion (HAsO
3
(C
4
H
9
)
-
)
8.91
425.
33
Thioarsensäure (H
3
AsSO
3
)
3.3
426.
33
Dihydrogenthioarsenat-Ion (H
2
AsSO
3
-
)
7.2
427.
33
Hydrogenthioarsenat-Ion (HAsSO
3
2-
)
11
428.
33
Dithioarsensäure (H
3
AsS
2
O
2
)
2.4
429.
33
Dihydrogendithioarsenat-Ion (H
2
AsS
2
O
2
-
)
7.1
430.
33
Hydrogenthioarsenat-Ion (HAsS
2
O
2
2-
)
10.9
431.
33
Hydrogentrithioarsenat-Ion (H
2
AsOS
3
2-
)
10.8
432.
33
Hydrogentetrathioarsenat-Ion (HAsS
4
2-
)
5.20
433.
33
Hexafluoroarsensäure (HAsF
6
)
-13
434.
34
Selenwasserstoffsäure (H
2
Se)
3.73
435.
34
Hydrogenselenid-Ion (HSe
-
)
11
436.
34
Methanselenol (CH
3
SeH)
5.20
437.
34
Selenophenol (C
6
H
5
SeH)
5.90
438.
34
Selenige Säure (H
2
SeO
3
)
2.62
439.
34
Hydrogenselenid-Ion (HSeO
3
-
)
8.32
440.
34
Selensäure (H
2
SeO
4
)
-3
441.
34
Hydrogenselenat-Ion (HSeO
4
-
)
1.74
442.
34
Thioselensäure (H
2
SeSO
3
)
0.99
443.
35
Bromwasserstoffsäure (HBr)
-8.72
444.
35
Hypobromitazidium-Ion (H
2
OBr
+
)
-2
445.
35
Hypobromige Säure (HOBr)
8.68
446.
35
Bromige Säure (HBrO
2
)
2.85
447.
35
Bromsäure (HBrO
3
)
0
448.
35
Perbromsäure (HBrO
4
)
-8
449.
37
Rubidium-Ion (Rb
+
)
15.4
450.
38
Strontium-Ion (Sr
2+
)
13.17
451.
38
Hydroxo-Strontium-Ion (Sr(OH)
+
)
13.7
452.
39
Yttrium-Ion (Y
3+
)
7.70
453.
39
Hydroxo-Yttrium-Ion (Y(OH)
2+
)
8.70
454.
39
Dihydroxo-Yttrium-Ion (Y(OH)
2
+
)
9.60
455.
39
Yttriumhydroxid (Y(OH)
3
)
10.5
456.
40
Zirconium(IV)-Ion (Zr
4+
)
-0.32
457.
40
Hydroxo-Zirconium(IV)-Ion (Zr(OH)
3+
)
0.06
458.
40
Dihydroxo-Zirconium(IV)-Ion (Zr(OH)
2
2+
)
0.35
459.
40
Trihydroxo-Zirconium(IV)-Ion (Zr(OH)
3
+
)
0.46
460.
40
Zirconium(IV)hydroxid (Zr(OH)
4
)
6.30
461.
41
Metaniobsäure (HNbO
3
)
7.40
462.
42
Molybdän(III)-Ion (Mo
3+
)
-0.01
463.
42
Trihydroxomolybdänyl(VI)-Ion (MoO(OH)
3
+
)
0.93
464.
42
Molybdänsäure (H
2
MoO
4
)
3.70
465.
42
Hydrogenmolybdat-Ion (HMoO
4
-
)
7.50
466.
43
Technetyl(IV)-Ion (TcO
2+
)
1.37
467.
43
Hydroxytechnetyl(IV)-Ion (TcO(OH)
+
)
2.43
468.
43
Technetyl(IV)hydroxid (TcO(OH)
2
)
11
469.
43
Pertechnetiumsäure (HTcO
4
)
0.3
470.
44
Ruthenium(III)-Ion (Ru
3+
)
3.4
471.
44
Perrutheniumsäure (H
2
RuO
5
)
11.20
472.
45
Rhodium(III)-Ion (Rh
3+
)
3.33
473.
46
Palladium(II)-Ion (Pd
2+
)
1.65
474.
46
Hydroxo-Palladium(II)-Ion (Pd(OH)
+
)
2.46
475.
46
Palladium(II)hydroxid (Pd(OH)
2
)
11.09
476.
46
Trihydroxo-Palladat(II)-Ion (Pd(OH)
3
-
)
13.43
477.
47
Silber(I)ion (Ag
+
)
11.5
478.
47
Silberhydroxid (AgOH)
12.2
479.
47
Silber(II)ion (Ag
2+
)
8.24
480.
48
Cadmium-Ion (Cd
2+
)
9.97
481.
48
Hydroxo-Cadmium-Ion (Cd(OH)
2+
)
10.40
482.
48
Cadmiumhydroxid (Cd(OH)
2
)
12.82
483.
48
Trihydroxo-Cadmat-Ion (Cd(OH)
3
-
)
13.72
484.
49
Indium(I)-Ion (In
+
)
11.83
485.
49
Indium(III)-Ion (In
3+
)
3.54
486.
49
Hydroxo-Indium(III)-Ion (In(OH)
2+
)
4.28
487.
49
Dihydroxo-Indium(III)-Ion (In(OH)
2
+
)
5.16
488.
49
Indium(III)hydroxid (In(OH)
3
)
9.67
489.
50
Zinn(II)-Ion (Sn
2+
)
3.40
490.
50
Hydroxozinn(II)-Ion (Sn(OH)
+
)
3.66
491.
50
Zinn(II)hydroxid (Sn(OH)
2
)
9.55
492.
50
Zinn(IV)-Ion (Sn
4+
)
-0.60
493.
50
Hydroxo-Zinn(IV)-Ion (Sn(OH)
3+
)
0.08
494.
50
Dihydroxo-Zinn(IV)-Ion (Sn(OH)
2
2+
)
0.92
495.
50
Trihydroxo-Zinn(IV)-Ion (Sn(OH)
3
+
)
3.32
496.
50
Zinn(IV)hydroxid (Sn(OH)
4
)
7.97
497.
50
Pentahydroxo-Stannat(IV)-Ion (Sn(OH)
5
-
)
9.99
498.
51
Antimon(III)-Ion (Sb
3+
)
-1.67
499.
51
Hydroxo-Antimon(III)-Ion (Sb(OH)
2+
)
0
500.
51
Dihydroxo-Antimon(III)-Ion (Sb(OH)
2
+
)
1.42
501.
51
Antimon(III)hydroxid (Sb(OH)
3
)
11.82
502.
51
Orthoantimonsäure (H
7
SbO
6
)
2.55
503.
51
Hexafluoroantimonsäure (HSbF
6
)
-17
504.
52
Tellurwasserstoffsäure (H
2
Te)
2.64
505.
52
Hydrogentellurid-Ion (HTe
-
)
10.69
506.
52
Tellurige Säure (H
2
TeO
3
)
2.7
507.
52
Hydrogentellurid-Ion (HTeO
3
-
)
8
508.
52
Orthotellursäure (H
6
TeO
6
)
7.7
509.
52
Pentahydrogenorthotellurat-Ion (H
5
TeO
6
-
)
10.95
510.
52
Tetrahydrogenorthotellurat-Ion (H
4
TeO
6
2-
)
14.25
511.
53
Iodwasserstoffsäure (HI)
-9.5
512.
53
Hypoioditazidium-Ion (H
2
OI
+
)
1.2
513.
53
Hypoiodige Säure (HOI)
10.64
514.
53
Iodäure (HIO
3
)
0.804
515.
53
Metaperiodsäure (HIO
4
)
1.64
516.
53
Orthoperiodat-Acidium-Ion (H
6
IO
6
+
)
-0.80
517.
53
Ortho-Periodsäure (H
5
IO
6
)
3.29
518.
53
Tetrahydrogenorthoperiodat-Ion (H
4
IO
6
-
)
8.31
519.
53
Trihydrogenorthoperiodat-Ion (H
3
IO
6
2-
)
11.6
520.
53
Dihydrogenorthoperiodat-Ion (H
2
IO
6
3-
)
13.3
521.
53
Hydrogenperiodat-Ion (HIO
6
4-
)
15
522.
54
Xenon(VI)säure (H
2
XeO
4
)
10.5
523.
54
Xenon(VIII)säure (H
4
XeO
6
)
2
524.
54
Trihydrogenxenonat(VIII)-Ion (H
3
XeO
6
-
)
6
525.
54
Dihydrogenxenonat(VIII)-Ion (H
2
XeO
6
2-
)
10.5
526.
54
Hydrogenxenonat(VIII) (HXeO
6
3-
)
15
527.
55
Cäsium-Ion (Cs
+
)
15.76
528.
56
Barium-Ion (Ba
2+
)
13.36
529.
56
Hydroxo-Barium-Ion (Ba(OH)
+
)
13.85
530.
57
Lanthan-Ion (La
3+
)
8.60
531.
57
Hydroxo-Lanthan-Ion (La(OH)
2+
)
9.60
532.
57
Dihydroxo-Lanthan-Ion (La(OH)
2
+
)
9.80
533.
57
Lanthanhydroxid (La(OH)
3
)
13.70
534.
58
Cer(III)-Ion (Ce
3+
)
8.35
535.
58
Hydroxo-Cer(III)-Ion (Ce(OH)
2+
)
9.25
536.
58
Dihydroxo-Cer(III)-Ion (Ce(OH)
2
+
)
9.60
537.
58
Cer(III)hydroxid (Ce(OH)
3
)
12.10
538.
58
Cer(IV)-Ion (Ce
4+
)
-1.15
539.
58
Hydroxo-Cer(IV)-Ion (Ce(OH)
3+
)
0.82
540.
58
Dihydroxo-Cer(IV)-Ion (Ce(OH)
2
2+
)
1.68
541.
58
Trihydroxo-Cer(IV)-Ion (Ce(OH)
3
+
)
2.29
542.
59
Praseodym(III)-Ion (Pr
3+
)
8.20
543.
59
Hydroxo-Praseodym(III)-Ion (Pr(OH)
2+
)
9.00
544.
59
Dihydroxo-Praseodym(III)-Ion (Pr(OH)
2
+
)
9.40
545.
60
Neodym(III)-Ion (Nd
3+
)
8.10
546.
60
Hydroxo-Neodym(III)-Ion (Nd(OH)
2+
)
8.80
547.
60
Dihydroxo-Neodym(III)-Ion (Nd(OH)
2
+
)
9.50
548.
60
Neodym(III)hydroxid (Nd(OH)
3
)
10.7
549.
61
Promethium(III)-Ion (Pm
3+
)
8.00
550.
61
Hydroxo-Promethium(III)-Ion (Pm(OH)
2+
)
8.80
551.
61
Dihydroxo-Promethium(III)-Ion (Pm(OH)
2
+
)
9.40
552.
62
Samarium(III)-Ion (Sm
3+
)
7.90
553.
62
Hydroxo-Samarium(III)-Ion (Sm(OH)
2+
)
8.60
554.
62
Dihydroxo-Samarium(III)-Ion (Sm(OH)
2
+
)
9.40
555.
62
Samarium(III)hydroxid (Sm(OH)
3
)
11
556.
63
Europium(II)-Ion (Eu
2+
)
12.5
557.
63
Europium(III)-Ion (Eu
3+
)
7.80
558.
63
Hydroxo-Europium(III)-Ion (Eu(OH)
2+
)
8.60
559.
63
Dihydroxo-Europium(III)-Ion (Eu(OH)
2
+
)
8.80
560.
63
Europium(III)hydroxid (Eu(OH)
3
)
9.10
561.
64
Gadolinium-Ion (Gd
3+
)
8.00
562.
64
Hydroxo-Gadolinium-Ion (Gd(OH)
2+
)
8.20
563.
64
Dihydroxo-Gadolinium-Ion (Gd(OH)
2
+
)
8.30
564.
64
Gadoliniumhydroxid (Gd(OH)
3
)
9.40
565.
65
Terbium(III)-Ion (Tb
3+
)
7.90
566.
65
Hydroxo-Terbium(III)-Ion (Tb(OH)
2+
)
8.40
567.
65
Dihydroxo-Terbium(III)-Ion (Tb(OH)
2
+
)
8.80
568.
66
Dysprosium(III)-Ion (Dy
3+
)
7.96
569.
66
Hydroxo-Dysprosium(III)-Ion (Dy(OH)
2+
)
8.24
570.
66
Dihydroxo-Dysprosium(III)-Ion (Dy(OH)
2
+
)
8.50
571.
66
Dysprosium(III)hydroxid (Dy(OH)
3
)
8.80
572.
67
Holmium(III)-Ion (Ho
3+
)
7.90
573.
67
Hydroxo-Holmium(III)-Ion (Ho(OH)
2+
)
8.20
574.
67
Dihydroxo-Holmium(III)-Ion (Ho(OH)
2
+
)
8.40
575.
67
Holmium(III)hydroxid (Ho(OH)
3
)
8.90
576.
68
Erbium(III)-Ion (Er
3+
)
7.87
577.
68
Hydroxo-Erbium(III)-Ion (Er(OH)
2+
)
8.03
578.
68
Dihydroxo-Erbium(III)-Ion (Er(OH)
2
+
)
8.30
579.
68
Erbium(III)hydroxid (Er(OH)
3
)
8.40
580.
69
Thulium(III)-Ion (Tm
3+
)
7.75
581.
69
Hydroxo-Thulium(III)-Ion (Tm(OH)
2+
)
8.15
582.
69
Dihydroxo-Thulium(III)-Ion (Tm(OH)
2
+
)
8.30
583.
70
Ytterbium(II)-Ion (Yb
2+
)
12.1
584.
70
Ytterbium(III)-Ion (Yb
3+
)
7.65
585.
70
Hydroxo-Ytterbium(III)-Ion (Yb(OH)
2+
)
8.05
586.
70
Dihydroxo-Ytterbium(III)-Ion (Yb(OH)
2
+
)
8.30
587.
70
Ytterbium(III)hydroxid (Yb(OH)
3
)
8.70
588.
71
Lutetium-Ion (Lu
3+
)
7.60
589.
71
Hydroxo-Lutetium-Ion (Lu(OH)
2+
)
8.10
590.
71
Dihydroxo-Lutetium-Ion (Lu(OH)
2
+
)
8.20
591.
71
Lutetiumhydroxid (Lu(OH)
3
)
8.7
592.
72
Hafnium(IV)-Ion (Hf
4+
)
-0.12
593.
72
Hydroxo-Hafnium(IV)-Ion (Hf(OH)
3+
)
0.23
594.
72
Dihydroxo-Hafnium(IV)-Ion (Hf(OH)
2
2+
)
0.42
595.
72
Trihydroxo-Hafnium(IV)-Ion (Hf(OH)
3
+
)
0.52
596.
73
Metatantalsäure (HTaO
3
)
9.60
597.
74
Trihydroxowolframyl(VI)-Ion (WO(OH)
3
+
)
0.98
598.
74
Wolframsäure (H
2
WO
4
)
3.80
599.
74
Hydrogenwolframat-Ion (HWO
4
-
)
8.10
600.
75
Perrheniumsäure (HReO
4
)
-1.25
601.
76
Perosmiumsäure (H
4
OsO
6
)
7.2
602.
76
Trihydrogenperosmat(VIII)-Ion (H
3
OsO
6
-
)
12.2
603.
76
Dihydrogenperosmat(VIII)-Ion (H
2
OsO
6
2-
)
13.95
604.
76
Hydrogenperosmat(VIII)-Ion (HOsO
6
3-
)
14.17
605.
77
Iridium(III)-Ion (Ir
3+
)
4.37
606.
77
Hydroxo-Iridium(III)-Ion (Ir(OH)
2+
)
5.20
607.
78
Platin(II)-Ion (Pt
2+
)
4.73
608.
78
Hydroxo-Platin(II)-Ion (Pt(OH)
+
)
9.20
609.
79
Gold(I)-Ion (Au
+
)
3.8
610.
79
Gold(I)hydroxid (AuOH)
12.4
611.
79
Gold(III)-Ion (Au
3+
)
-1.50
612.
79
Hydroxo-Gold(III)-Ion (Au(OH)
2+
)
0.5
613.
79
Dihydroxo-Gold(III)-Ion (Au(OH)
2
+
)
1.0
614.
79
Gold(III)hydroxid (Au(OH)
3
)
11.8
615.
79
Tetrahydroxo-Aurat(III)-Ion (Au(OH)
4
-
)
13.3
616.
79
Pentahydroxo-Aurat(III)-Ion (Au(OH)
5
2-
)
16
617.
80
Quecksilber(I)-Ion (Hg
2
2+
)
4.80
618.
80
Quecksilber(II)-Ion (Hg
2+
)
3.40
619.
80
Hydroxo-Quecksilber(II)-Ion (Hg(OH)
+
)
2.50
620.
80
Quecksilber(II)hydroxid (Hg(OH)
2
)
14.77
621.
81
Thallium(I)-Ion (Tl
+
)
13.36
622.
81
Thallium(III)-Ion (Tl
3+
)
0.60
623.
81
Hydroxo-Thallium(III)-Ion (Tl(OH)
2+
)
0.80
624.
81
Dihydroxo-Thallium(III)-Ion (Tl(OH)
2
+
)
1.90
625.
81
Thallium(III)hydroxid (Tl(OH)
3
)
11.70
626.
82
Blei(II)-Ion (Pb
2+
)
7.49
627.
82
Hydroxo-Blei(II)-Ion (Pb(OH)
+
)
9.62
628.
82
Blei(II)hydroxid (Pb(OH)
2
)
10.88
629.
82
Trihydroxo-Plumbat(II)-Ion (Pb(OH)
3
-
)
11.27
630.
82
Blei(IV)-Ion (Pb
4+
)
1.8
631.
82
Hydroxo-Blei(IV)-Ion (Pb(OH)
3+
)
3.2
632.
83
Wismut(III)-Ion (Bi
3+
)
0.92
633.
83
Hydroxo-Wismut(III)-Ion (Bi(OH)
2+
)
1.64
634.
83
Dihydroxo-Wismut(III)-Ion (Bi(OH)
2
+
)
6.38
635.
83
Wismut(III)hydroxid (Bi(OH)
3
)
12.72
636.
84
Polonium(VI)-Ion (Po
4+
)
0.48
637.
84
Hydroxo-Polonium(IV)-Ion (Po(OH)
3+
)
2.74
638.
84
Dihydroxo-Polonium(IV)-Ion (Po(OH)
2
2+
)
5.58
639.
84
Polonige Säure (H
2
PoO
3
)
4.09
640.
85
Astat(I)-Ion (At
+
)
1.50
641.
87
Francium-Ion (Fr
+
)
15.76
642.
88
Radium-Ion (Ra
2+
)
13.40
643.
88
Hydroxo-Radium-Ion (Ra(OH)
+
)
14
644.
89
Actinium-Ion (Ac
3+
)
9.4
645.
89
Hydroxo-Actinium-Ion (Ac(OH)
2+
)
9.9
646.
89
Dihydroxo-Actinium-Ion (Ac(OH)
2
+
)
11.1
647.
90
Thorium(IV)-Ion (Th
4+
)
3.89
648.
90
Hydroxo-Thorium(IV)-Ion (Th(OH)
3+
)
4.20
649.
90
Dihydroxo-Thorium(IV)-Ion (Th(OH)
2
2+
)
4.40
650.
90
Trihydroxo-Thorium(IV)-Ion (Th(OH)
3
+
)
5.80
651.
91
Protactinium(IV)-Ion (Pa
4+
)
-0.80
652.
91
Hydroxo-Protactinium(IV)-Ion (Pa(OH)
3+
)
0.14
653.
91
Dihydroxo-Protactinium(IV)-Ion (Pa(OH)
2
2+
)
0.38
654.
91
Trihydroxo-Protactinium(IV)-Ion (Pa(OH)
3
+
)
1.25
655.
91
Protactinyl(V)-Ion (PaO
3+
)
0.65
656.
91
Hydroxo-Protactinyl(V)-Ion (PaO(OH)
2+
)
3.46
657.
91
Dihydroxo-Protactinyl(V)-Ion (PaO(OH)
2
+
)
11.19
658.
92
Uran(IV)-Ion (U
4+
)
0.29
659.
92
Hydroxo-Uran(IV)-Ion (U(OH)
3+
)
1.49
660.
92
Dihydroxo-Uran(IV)-Ion (U(OH)
2
2+
)
3.37
661.
92
Trihydroxo-Uran(IV)-Ion (U(OH)
3
+
)
5.65
662.
92
Uran(IV)hydroxid (U(OH)
4
)
7.5
663.
92
Uranyl(VI)-Ion (UO
2
2+
)
5.2
664.
92
Hydroxo-Uranyl(VI)-Ion (UO
2
(OH)
+
)
6.8
665.
92
Uranyl(VI)hydroxid (UO
2
(OH)
2
)
7.2
666.
92
Trihydroxo-Uranat(VI)-Ion (UO
2
(OH)
3
-
)
13.8
667.
93
Neptunium(III)-Ion (Np
3+
)
7.43
668.
93
Neptunium(IV)-Ion (Np
4+
)
0.09
669.
93
Hydroxo-Neptunium(IV)-Ion (Np(OH)
3+
)
0.78
670.
93
Dihydroxo-Neptunium(IV)-Ion (Np(OH)
2
2+
)
3.43
671.
93
Trihydroxo-Neptunium(IV)-Ion (Np(OH)
3
+
)
5.30
672.
93
Neptunyl(V)-Ion (NpO
2
+
)
11.3
673.
93
Neptunyl(V)hydroxid (NpO
2
(OH))
12.3
674.
93
Neptunyl(VI)-Ion (NpO
2
2+
)
5.10
675.
94
Plutonium(III)-Ion (Pu
3+
)
7.22
676.
94
Hydroxo-Plutonium(III)-Ion (Pu(OH)
2+
)
7.88
677.
94
Dihydroxo-Plutonium(III)-Ion (Pu(OH)
2
+
)
11.1
678.
94
Plutonium(IV)-Ion (Pu
4+
)
0.05
679.
94
Hydroxo-Plutonium(IV)-Ion (Pu(OH)
3+
)
0.44
680.
94
Dihydroxo-Plutonium(IV)-Ion (Pu(OH)
2
2+
)
3.12
681.
94
Trihydroxo-Plutonium(IV)-Ion (Pu(OH)
3
+
)
6.70
682.
94
Plutonyl(V)-Ion (PuO
2
+
)
9.7
683.
94
Plutonyl(VI)-Ion (PuO
2
2+
)
3.33
684.
94
Hydroxo-Plutonyl(VI)-Ion (PuO
2
(OH)
+
)
4.05
685.
95
Americium(III)-Ion (Am
3+
)
5.92
686.
95
Hydroxo-Americium(III)-Ion (Am(OH)
2+
)
7.90
687.
95
Dihydroxo-Americium(III)-Ion (Am(OH)
2
+
)
11.10
688.
96
Curium(III)-Ion (Cm
3+
)
5.92
689.
96
Hydroxo-Curium(III)-Ion (Cm(OH)
2+
)
7.90
690.
96
Dihydroxo-Curium(III)-Ion (Cm(OH)
2
)
11.1
691.
97
Berkelium(III)-Ion (Bk
3+
)
5.10
692.
98
Californium(III)-Ion (Cf
3+
)
5.62
693.
99
Einsteinium(III)-Ion (Es
3+
)
5.14
694.
100
Fermium(III)-Ion (Fm
3+
)
3.79
695.
104
Rutherfordium(IV)-Ion (Rf
4+
)
1.9
696.
104
Hydroxo-Rutherfordium(IV)-Ion (Rf(OH)
3+
)
2.1
697.
104
Dihydroxo-Rutherfordium(IV)-Ion (Rf(OH)
2
2+
)
3.6
698.
104
Trihydroxo-Rutherfordium(IV)-Ion (Rf(OH)
3
+
)
5.3
699.
104
Rutherfordium(IV)hydroxid (Rf(OH)
4
)
5.5
700.
106
Trihydroxo-Seaborgyl(VI)-Ion (SgO(OH)
3
+
)
1.02
701.
106
Seaborgium(VI)säure (H
2
SgO
4
)
3.75
702.
106
Hydrogenseaborgiat(VI)-Ion (HSgO
4
-
)
8.9