13 | 14 | 15 | 16 | 17 |
---|---|---|---|---|
Boron |
Carbon |
Nitrogen |
Oxygen |
Fluorine |
Aluminium |
Silicon |
Phosphorus |
Sulphur |
Chlorine |
Gallium |
Germanium |
Arsenic |
Selenium |
Bromine |
Indium |
Tin |
Antimony |
Tellurium |
Iodine |
Thallium |
Lead |
Bismuth |
Polonium |
Astatine |
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