Periodic Table of the Elements: Cobalt
Related article: Periodic Table of the Elements (table)Periodic Table of the Elements
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| Atomic Number: | 27 |
| Atomic Symbol: | Co |
| Cobaltcobalt, metallic chemical element; symbol Co; at. no. 27; at. wt. 58.9332; m.p. 1,495°C;; b.p. about 2,870°C;; sp. gr. 8.9 at 20°C;; valence +2 or +3. Cobalt is a silver-white, lustrous, hard, brittle metal. It is a member of Group 9 of the periodic table. ..... Click the link for more information. | |
| Atomic Weight: | 58.9332 |
| Electron Configuration: | 2 · 8 · 15 · 2 |