Logam alkali | Alkali tanah | Lantanida | Aktinida | Logam transisi |
Logam | Metaloid | Nonlogam | Halogen | Gas mulia |
Nama | Lambang | Nomor atom | Massa atom | Golongan | Periode |
---|---|---|---|---|---|
Aktinium | Ac | 89 | [227]1 | 7 | |
Alumunium | Al | 13 | 26,9815386(8) | 13 | 3 |
Amerisium | Am | 95 | [243]1 | 7 | |
Antimon (Stibium) | Sb | 51 | 121,760(1)2 | 15 | 5 |
Argentum—lihat Perak | Ag | ||||
Argon | Ar | 18 | 39,948(1)2 4 | 18 | 3 |
Arsenik | As | 33 | 74,92160(2) | 15 | 4 |
Astatin | At | 85 | [210]1 | 17 | 6 |