1
Q
Polyatomic Ions
A
Ions made up of many (poly) atoms
2
Q
Ammonium
A
NH4+
3
Q
NO2-
A
Nitrite
4
Q
NO3-
A
Nitrate
5
Q
SO3-2
A
Sulfite
6
Q
SO4-2
A
Sulfate
7
Q
HSO4-
A
Hydrogen Sulfate
8
Q
OH-
A
Hydroxide
9
Q
CN-
A
Cyanide
10
Q
PO4-3
A
Phosphate
11
Q
HPO4-
A
Hydrogen Phosphate
12
Q
CO3-2
A
Carbonate
13
Q
CrO4-2
A
Chromate
14
Q
Cr2O7-2
A
Dichromate
15
Q
MnO4-
A
Permanganate
16
Q
C2H3O2-
A
Acetate
17
Q
ClO4-
A
Perchlorate
18
Q
ClO3-
A
Chlorate
19
Q
ClO2-
A
Chlorite
20
Q
ClO-
A
Hypochlorite
21
Q
HCO3-
A
Hydrogen Carbonate
22
Q
Ammonium
A
NH4+
23
Q
Nitrite
A
NO2-
24
Q
Nitrate
A
NO3-
25
Sulfite
SO3-2
26
Sulfate
SO4-2
27
Hydrogen Sulfate
HSO4-
28
Hydroxide
OH-
29
Cyanide
CN-
30
Phosphate
PO4-3
31
Hydrogen Phosphate
HPO4-
32
Carbonate
CO3-2
33
Chromate
CrO4-2
34
Dichromate
Cr2O7-2
Anion also known as bichromate
35
Permanganate
MnO4-
36
Acetate
C2H3O2-
37
Perchlorate
ClO4-
38
Chlorate
ClO3-
39
Chlorite
ClO2-
40
Hypochlorite
ClO-
41
Hydrogen Carbonate
HCO3-
