Valence
1
H
Hydrogen
1
2
He
Helium
0
3
Li
Lithium
1
4
Be
Beryllium
2
5
B
Boron
3
6
C
Carbon
4
7
N
Nitrogen
3
8
O
Oxygen
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
15
P
Phosphorus
5
16
S
Sulphur
6
17
Cl
Chlorine
3
18
Ar
Argon
0
19
K
Potassium
1
20
Ca
Calcium
2
21
Sc
Scandium
3
22
Ti
Titanium
4
23
V
Vanadium
5
24
Cr
Chromium
6
25
Mn
Manganese
4
26
Fe
Iron
3
27
Co
Cobalt
4
28
Ni
Nickel
2
29
Cu
Copper
2
30
Zn
Zinc
2
31
Ga
Galium
3
32
Ge
Germanium
4
33
As
Arsenic
5
34
Se
Selenium
6
35
Br
Bromine
1
36
Kr
Krypton
2
37
Rb
Rubidium
1
38
Sr
Strontium
2
39
Y
Yttrium
3
40
Zr
Zirconium
4
41
Nb
Niobium
5
42
Mo
Molybdenum
6
43
Tc
Technetium
7
44
Ru
Ruthenium
6
45
Rh
Rhodium
6
46
Pd
Palladium
4
47
Ag
Silver
1
48
Cd
Cadmium
2
49
In
Indium
2
50
Sn
Tin
4
51
Sb
Antimony
5
52
Te
Tellurium
4
53
I
Iodine
7
54
Xe
Xenon
6
55
Cs
Caesium
1
56
Ba
Barium
2
57
La
Lanthanum
3
58
Ce
Cerium
4
59
Pr
Praseodymium
4
60
Nd
Neodymium
3
61
Pm
Promethium
3
62
Sm
Samarium
3
63
Eu
Europium
3
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
71
Lu
Lutetium
3
72
Hf
Hafnium
4
73
Ta
Tantalum
5
74
W
Tungsten
6
75
Re
Rhenium
7
76
Os
Osmium
6
77
Ir
Iridium
6
78
Pt
Platinum
6
79
Au
Gold
5
80
Hg
Mercury
2
81
Tl
Thallium
3
82
Pb
Lead
4
83
Bi
Bismuth
5
84
Po
Polonium
6
85
At
Astatine
7
86
Rn
Radon
6
87
Fr
Francium
1
88
Ra
Radium
2
89
Ac
Actinium
3
90
Th
Thorium
4
91
Pa
Protactinium
5
92
U
Uranium
6
93
Np
Neptunium
6
94
Pu
Plutonium
6
94
Am
Americium
4
96
Cm
Curium
4
97
Bk
Berkelium
4
98
Cf
Californium
4
99
Es
Einsteinium
4
100
Fm
Fermium
3
101
Md
Mendelevium
3
102
No
Nobelium
3
103
Lw
Lawrencium
3
104
Rf
Rutherfordium
4
105
Db
Dubnium
5
106
Sg
Seaborgium
6
107
Bh
Bohrium
7