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Oxidation States of the Elements

Find out the common oxidation states of elements, which indicate the number of electrons an atom can gain, lose, or share during chemical reactions.

1
1.008
H
Hydrogen
+1, -1
1
1.008
H
Hydrogen
+1, -1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
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

+5, +4, +3, +2, +1, -1, -2, -3
8

O

Oxygen

-2
9

F

Fluorine

-1
10

Ne

Neon

0
11

Na

Sodium

+1
12

Mg

Magnesium

+2
13

Al

Aluminum

+3
14

Si

Silicon

+4, +2, -4
15

P

Phosphorus

+5, +3, -3
16

S

Sulfur

+6, +4, -2
17

Cl

Chlorine

+7, +5, +1, -1
18

Ar

Argon

0
19

K

Potassium

+1
20

Ca

Calcium

+2
21

Sc

Scandium

+3
22

Ti

Titanium

+4, +3, +2
23

V

Vanadium

+5, +4, +3, +2
24

Cr

Chromium

+6, +3, +2
25

Mn

Manganese

+7, +4, +3, +2
26

Fe

Iron

+3, +2
27

Co

Cobalt

+3, +2
28

Ni

Nickel

+3, +2
29

Cu

Copper

+2, +1
30

Zn

Zinc

+2
31

Ga

Gallium

+3
32

Ge

Germanium

+4, +2
33

As

Arsenic

+5, +3, -3
34

Se

Selenium

+6, +4, -2
35

Br

Bromine

+5, +1, -1
36

Kr

Krypton

0
37

Rb

Rubidium

+1
38

Sr

Strontium

+2
39

Y

Yttrium

+3
40

Zr

Zirconium

+4
41

Nb

Niobium

+5, +3
42

Mo

Molybdenum

+6
43

Tc

Technetium

+7, +6, +4
44

Ru

Ruthenium

+3
45

Rh

Rhodium

+3
46

Pd

Palladium

+3, +2
47

Ag

Silver

+1
48

Cd

Cadmium

+2
49

In

Indium

+3
50

Sn

Tin

+4, +2
51

Sb

Antimony

+5, +3, -3
52

Te

Tellurium

+6, +4, -2
53

I

Iodine

+7, +5, +1, -1
54

Xe

Xenon

0
55

Cs

Cesium

+1
56

Ba

Barium

+2
57

La

Lanthanum

+3
58

Ce

Cerium

+4, +3
59

Pr

Praseodymium

+3
60

Nd

Neodymium

+3
61

Pm

Promethium

+3
62

Sm

Samarium

+3, +2
63

Eu

Europium

+3, +2
64

Gd

Gadolinium

+3
65

Tb

Terbium

+3
66

Dy

Dysprosium

+3
67

Ho

Holmium

+3
68

Er

Erbium

+3
69

Tm

Thulium

+3
70

Yb

Ytterbium

+3, +2
71

Lu

Lutetium

+3
72

Hf

Hafnium

+4
73

Ta

Tantalum

+5
74

W

Tungsten

+6
75

Re

Rhenium

+7, +6, +4
76

Os

Osmium

+4, +3
77

Ir

Iridium

+4, +3
78

Pt

Platinum

+4, +2
79

Au

Gold

+3, +1
80

Hg

Mercury

+2, +1
81

Tl

Thallium

+3, +1
82

Pb

Lead

+4, +2
83

Bi

Bismuth

+5, +3
84

Po

Polonium

+4, +2
85

At

Astatine

7, 5, 3, 1, -1
86

Rn

Radon

0
87

Fr

Francium

+1
88

Ra

Radium

+2
89

Ac

Actinium

+3
90

Th

Thorium

+4
91

Pa

Protactinium

+5, +4
92

U

Uranium

+6, +5, +4, +3
93

Np

Neptunium

+6, +5, +4, +3
94

Pu

Plutonium

+6, +5, +4, +3
95

Am

Americium

+6, +5, +4, +3
96

Cm

Curium

+3
97

Bk

Berkelium

+4, +3
98

Cf

Californium

+3
99

Es

Einsteinium

+3
100

Fm

Fermium

+3
101

Md

Mendelevium

+3, +2
102

No

Nobelium

+3, +2
103

Lr

Lawrencium

+3
104

Rf

Rutherfordium

+4
105

Db

Dubnium

5, 4, 3
106

Sg

Seaborgium

6, 5, 4, 3, 0
107

Bh

Bohrium

7, 5, 4, 3
108

Hs

Hassium

8, 6, 5, 4, 3, 2
109

Mt

Meitnerium

9, 8, 6, 4, 3, 1
110

Ds

Darmstadtium

8, 6, 4, 2, 0
111

Rg

Roentgenium

5, 3, 1, -1
112

Cn

Copernicium

2, 1, 0
113

Nh

Nihonium

114

Fl

Flerovium

6, 4, 2, 1, 0
115

Mc

Moscovium

3, 1
116

Lv

Livermorium

+4, +2, -2
117

Ts

Tennessine

+5, +3, +1, -1
118

Og

Oganesson

+6, +4, +2, +1, 0, -1