What is variable valency? Name two elements having variable valency an – InterviewSolution

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1.

What is variable valency? Name two elements having variable valency and state their valencies.

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Variable valency: Some elements exhibit more than one valence. They are said to have variable valency, e.g. Iron, copper, tin, lead.

Iron Fe Fe²⁺ or Fe³⁺

Copper cu cu⁺ or cu²⁺

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