Oxidation States
1
H
Hydrogen
-1
1
2
He
Helium
0
3
Li
Lithium
1
4
Be
Beryllium
2
5
B
Boron
3
6
C
Carbon
-4
2
4
7
N
Nitrogen
-3
-2
-1
1
2
3
4
5
8
O
Oxygen
-2
-1
1
2
9
F
Fluorine
-1
10
Ne
Neon
0
11
Na
Sodium
1
12
Mg
Magnesium
2
13
Al
Aluminium
3
14
Si
Silicon
-4
2
4
15
P
Phosphorus
-3
3
4
5
16
S
Sulphur
-2
2
4
6
17
Cl
Chlorine
-1
1
3
5
7
18
Ar
Argon
0
19
K
Potassium
1
20
Ca
Calcium
2
21
Sc
Scandium
3
22
Ti
Titanium
2
3
4
23
V
Vanadium
2
3
4
5
24
Cr
Chromium
-2
2
3
4
6
25
Mn
Manganese
-1
2
3
4
5
6
7
26
Fe
Iron
-2
2
3
27
Co
Cobalt
-1
2
3
28
Ni
Nickel
-1
2
3
29
Cu
Copper
1
2
30
Zn
Zinc
2
31
Ga
Galium
3
32
Ge
Germanium
2
4
33
As
Arsenic
-3
3
5
34
Se
Selenium
-2
2
4
6
35
Br
Bromine
-1
1
3
5
7
36
Kr
Krypton
0
2
4
37
Rb
Rubidium
1
38
Sr
Strontium
2
39
Y
Yttrium
3
40
Zr
Zirconium
3
4
41
Nb
Niobium
-1
3
5
42
Mo
Molybdenum
-2
2
3
4
5
6
43
Tc
Technetium
-1
4
7
44
Ru
Ruthenium
-2
2
3
4
6
8
45
Rh
Rhodium
-2
2
3
4
46
Pd
Palladium
2
4
47
Ag
Silver
1
2
48
Cd
Cadmium
2
49
In
Indium
3
50
Sn
Tin
2
4
51
Sb
Antimony
-3
3
5
52
Te
Tellurium
-2
2
4
6
53
I
Iodine
-1
1
5
7
54
Xe
Xenon
0
2
4
6
8
55
Cs
Caesium
1
56
Ba
Barium
2
57
La
Lanthanum
3
58
Ce
Cerium
3
4
59
Pr
Praseodymium
3
60
Nd
Neodymium
3
61
Pm
Promethium
3
62
Sm
Samarium
2
3
63
Eu
Europium
2
3
64
Gd
Gadolinium
2
3
65
Tb
Terbium
3
4
66
Dy
Dysprosium
3
67
Ho
Holmium
3
68
Er
Erbium
3
69
Tm
Thulium
2
3
70
Yb
Ytterbium
2
3
71
Lu
Lutetium
3
72
Hf
Hafnium
4
73
Ta
Tantalum
5
74
W
Tungsten
-2
-2
2
3
4
5
6
75
Re
Rhenium
-1
2
4
6
7
76
Os
Osmium
-2
2
3
4
6
8
77
Ir
Iridium
-1
1
2
3
4
6
78
Pt
Platinum
2
4
79
Au
Gold
1
3
80
Hg
Mercury
1
2
81
Tl
Thallium
1
3
82
Pb
Lead
2
4
83
Bi
Bismuth
3
5
84
Po
Polonium
2
4
85
At
Astatine
-1
1
3
5
7
86
Rn
Radon
0
2
87
Fr
Francium
1
88
Ra
Radium
2
89
Ac
Actinium
3
90
Th
Thorium
4
91
Pa
Protactinium
4
5
92
U
Uranium
3
4
5
6
93
Np
Neptunium
3
4
5
6
94
Pu
Plutonium
3
4
5
6
94
Am
Americium
3
4
5
6
96
Cm
Curium
3
4
97
Bk
Berkelium
3
4
98
Cf
Californium
3
4
99
Es
Einsteinium
3
100
Fm
Fermium
3
101
Md
Mendelevium
2
3
102
No
Nobelium
2
3
103
Lw
Lawrencium
3
104
Rf
Rutherfordium
4
105
Db
Dubnium
5
106
Sg
Seaborgium
107
Bh
Bohrium
108
Hs
Hassium
109
Mt
Meitnerium
110
Ds
Darmstadtium
111
Rg
Roentgenium
112
Cn
Copernicium
113
Nh
Nihonium
114
Fl
Flerovium
115
Mc
Moscovium
116
Lv
Livermorium
117
Ts
Tennessine
118
Og
Oganesson