Summary Pearson (Edexcel) A-Level Chemistry Chemical Reference Data Oxidation States of ALL Elements Table Overview

Negative states Positive states
Element −5 −4 −3 −2 −1 0 +1 +2 +3 +4 +5 +6 +7 +8 +9 Group
Z Name Formula
1 hydrogen H −1 1 1
2 helium He 0 18
3 lithium Li 0 1 1
4 beryllium Be 0 1 2 2
5 boron B −5 −1 0 1 2 3 13
6 carbon C −4 −3 −2 −1 0 1 2 3 4 14
7 nitrogen N −3 −2 −1 0 1 2 3 4 5 15
8 oxygen O −2 −1 0 1 2 16
9 fluorine F −1 0 17
10 neon Ne 0 18
11 sodium Na −1 0 1 1
12 magnesium Mg 0 1 2 2
13 aluminium Al −2 −1 0 1 2 3 13
14 silicon Si −4 −3 −2 −1 0 1 2 3 4 14
15 phosphorus P −3 −2 −1 0 1 2 3 4 5 15
16 sulfur S −2 −1 0 1 2 3 4 5 6 16
17 chlorine Cl −1 1 2 3 4 5 6 7 17
18 argon Ar 0 18
19 potassium K −1 1 1
20 calcium Ca 1 2 2
21 scandium Sc 0 1 2 3 3
22 titanium Ti −2 −1 0 1 2 3 4 4
23 vanadium V −3 −1 0 1 2 3 4 5 5
24 chromium Cr −4 −2 −1 0 1 2 3 4 5 6 6
25 manganese Mn −3 −2 −1 0 1 2 3 4 5 6 7 7
26 iron Fe −4 −2 −1 0 1 2 3 4 5 6 7 8
27 cobalt Co −3 −1 0 1 2 3 4 5 9

, 28 nickel Ni −2 −1 0 1 2 3 4 10
29 copper Cu −2 0 1 2 3 4 11
30 zinc Zn −2 0 1 2 12
31 gallium Ga −5 −4 −3 −2 −1 0 1 2 3 13
32 germanium Ge −4 −3 −2 −1 0 1 2 3 4 14
33 arsenic As −3 −2 −1 0 1 2 3 4 5 15
34 selenium Se −2 −1 0 1 2 3 4 5 6 16
35 bromine Br −1 1 2 3 4 5 7 17
36 krypton Kr 0 1 2 18
37 rubidium Rb −1 1 1
38 strontium Sr 1 2 2
39 yttrium Y 0 1 2 3 3
40 zirconium Zr −2 0 1 2 3 4 4
41 niobium Nb −3 −1 0 1 2 3 4 5 5
42 molybdenum Mo −4 −2 −1 0 1 2 3 4 5 6 6
43 technetium Tc −3 −1 0 1 2 3 4 5 6 7 7
44 ruthenium Ru −4 −2 0 1 2 3 4 5 6 7 8 8
45 rhodium Rh −3 −1 0 1 2 3 4 5 6 7 9
46 palladium Pd 0 1 2 3 4 5 10
47 silver Ag −2 −1 0 1 2 3 11
48 cadmium Cd −2 1 2 12
49 indium In −5 −2 −1 0 1 2 3 13
50 tin Sn −4 −3 −2 −1 0 1 2 3 4 14
51 antimony Sb −3 −2 −1 0 1 2 3 4 5 15
52 tellurium Te −2 −1 0 1 2 3 4 5 6 16
53 iodine I −1 1 2 3 4 5 6 7 17
54 xenon Xe 0 2 4 6 8 18
55 caesium Cs −1 1 1
56 barium Ba 1 2 2
57 lanthanum La 0 1 2 3 f-block groups