Nickel is element 28, a transition metal of the d block, in group 10, period 4. Its ground-state configuration is [Ar] 3d8 4s2, and it usually shows the oxidation states 0, 2, 3.
It was discovered in 1751, by Cronstedt.
Name origin: from Swedish kopparnickel, containing the German word Nickel, 'goblin'.
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