1
Calciu
2
Clor
3
Cadmiu
4
Carbon
5
Crom
6
Cobalt
7
Cupru
8
Oxigen
9
Fosfor
10
Potasiu
11
Sodiu
12
Sulf
13
Platina
14
Aluminiu
15
Azot
16
Vanadiu
17
Heliu
18
Neon
19
Fluor
20
Magneziu
21
Mangan
22
Beriliu
23
Bismut
24
Bor
25
Mercur
26
Nichel
27
Cesiu
28
Zinc
29
Brom
30