Periodic Table of the Elements
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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
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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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Discoverer

Year of discovery Discoverer
1735 Georg Brandt

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