1
Q
Acetate
A
C₂H₃O₂⁻
2
Q
C₂H₃O₂⁻
A
Acetate
3
Q
Oxalate
A
C₂O₄⁻²
4
Q
C₂O₄⁻²
A
Oxalate
5
Q
carbonate
A
CO₃⁻²
6
Q
CO₃⁻²
A
carbonate
7
Q
hydrogen carbonate
A
HCO₃⁻
8
Q
HCO₃⁻
A
hydrogen carbonate
9
Q
nitrite
A
NO₂⁻
10
Q
NO₂⁻
A
nitrite
11
Q
nitrate
A
NO₃⁻
12
Q
NO₃⁻
A
nitrate
13
Q
Ammonium
A
NH₄⁺
14
Q
NH₄⁺
A
Ammonium
15
Q
Cyanide
A
CN⁻
16
Q
CN⁻
A
Cyanide
17
Q
sulfite
A
SO₃⁻²
18
Q
SO₃⁻²
A
sulfite
19
Q
sulfate
A
SO₄⁻²
20
Q
SO₄⁻²
A
sulfate
21
Q
hydrogen sulfate
A
HSO₄⁻
22
Q
HSO₄⁻
A
hydrogen sulfate
23
Q
SCN⁻
A
Thiocyanate
24
Q
Thiocyanate
A
SCN⁻
25
PO₃⁻³
phosphite
26
phosphite
PO₃⁻³
27
phosphate
PO₄⁻³
28
PO₄⁻³
phosphate
29
hydrogen phosphate
HPO₄⁻²
30
HPO₄⁻²
hydrogen phosphate
31
dihydrogen phosphate
H₂PO₄⁻
32
H₂PO₄⁻
dihydrogen phosphate
33
Chromate
CrO₄⁻²
34
CrO₄⁻²
Chromate
35
Dichromate
Cr₂O₇⁻²
36
Cr₂O₇⁻²
Dichromate
37
Permanganate
MnO₄⁻
38
MnO₄⁻
Permanganate
39
Hydroxide
OH⁻
40
OH⁻
Hydroxide
41
perchlorate
ClO₄⁻
42
ClO₄⁻
perchlorate
43
chlorate
ClO₃⁻
44
ClO₃⁻
chlorate
45
chlorite
ClO₂⁻
46
ClO₂⁻
chlorite
47
hypochlorite
ClO⁻
48
ClO⁻
hypochlorite
49
Peroxide
O₂⁻²
50
O₂⁻²
Peroxide
51
mercury (I)
Hg₂⁺²
52
Hg₂⁺²
mercury (I)
53
mercury (II)
Hg⁺²
54
Hg⁺²
mercury (II)
55
______ oxygen ends with -ate
______ oxygens ends with- Ite
[polyatomic ions]
more oxygen ends with -ate
less oxygens ends with- Ite
56
Phrase for remembering charges of common polyatomic ions
NSP 123
Nitrate & nitrite = charge -1
Sulfate & sulfite = charge -2
Phosphate & phosphite = charge -3
57
IO⁻
hypoiodite
58
hypoiodite
IO⁻
59
IO₂⁻
iodite
60
iodite
IO₂⁻
61
IO₃⁻
Iodate
62
Iodate
IO₃⁻
63
IO₄⁻
periodate
64
periodate
IO₄⁻
65
BrO⁻
hypobromite
66
hypobromite
BrO⁻
67
BrO₂⁻
bromite
68
bromite
BrO₂⁻
69
BrO₃⁻
bromate
70
bromate
BrO₃⁻
71
BrO₄⁻
perbromate
72
perbromate
BrO₄⁻
73
Way to memorize the -ate polyatomic ions & rules
Nick the Camel ate a Clam Supper and Crepes in Pheonix
1st letter = 1st element
constants = # of oxygens
vowels = charge #
Chemistry
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