Cobalt

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name Cobalt latin Cobaltum french Cobalt german Cobalt symbol Co proton number 27 atomic weight 58.9332 Pauling electronegativity 1.88 electronic configuration [Ar] 3d74s2 >> show long melting point 1768 K, 1495°C, 2723°F boiling point 3200 K, 2927°C, 5300°F group 9 period 4 state (by 20°C) solid oxidation states +2, +3

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