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What is the valency of nickel

Answer»

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◆Nickel has VARIABLE valency as it belongs to D-Block of the modern periodic table.

◆Valency of Nickel is +1 , + 2 , +3 and +4
But generally in the questions we use +2 valency of Nickel because, valency of an element depends upon the HIGHEST ENERGY LEVEL of 's' and 'p' shell.

◆ For nickel it would be 4s2 so resulting +2 valency by giving both the s-electrons away.



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