Cobalt Facts - Atomic Number 27 or Co - Science Notes and …
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WEBNov 14, 2018 · Appearance: Cobalt is a lustrous, hard, blue-gray metal. Group: Group 9 (Transition metal) Period: Period 4; Block: d-block element; Electron Configuration: [Ar] 3d 7 4s 2; Phase at STP: Solid; Melting Point: 1768 K (1495 °C, 2723 °F) Boiling Point: 3200 K (2927 °C, 5301 °F) Density: 8.90 g/cm 3; Oxidation States: −3, −1, +1, +2, +3, +4, +5
DA: 62 PA: 30 MOZ Rank: 63