Valences Of Some Common Monatomic Ions Page 2
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1
2Valences of Some Common Polyatomic Ions
+1
+2
Ammonium NH
+1
Mercury (I) Hg
+2
4
2
-1
-2
Acetate C
H
O
-1
Carbonate CO
-2
2
3
2
3
Bromate BrO
-1
Chromate CrO
-2
3
4
Chlorate ClO
-1
Dichromate Cr
O
-2
3
2
7
Chlorite ClO
-1
Hydrogen Phosphate HPO
-1
2
4
Cyanide CN
-1
Oxalate C
O
-2
2
4
Dihydrogen Phosphate H
PO
-2
Peroxide O
-2
2
4
2
Hydrogen carbonate or
Silicate SiO
-2
4
Bicarbonate HCO
-1
Sulfate SO
-2
3
4
Hydrogen sulfate HSO
-1
Sulfite SO
-2
4
3
Hydrogen sulfide HS
-1
Tartrate C
H
O
-2
4
4
6
Hydroxide OH
-1
Tetraborate B
O
-2
4
7
Hypochlorite ClO
-1
Thiosulfate S
O
-2
2
3
Iodate IO
-1
3
Nitrate NO
-1
3
Nitrite NO
-1
2
Perchlorate ClO
-1
4
Permanganate MnO
-1
4
Thiocyanate SCN
-1
-3
Phosphate PO
-3
4
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