Question

Which one of the following metal exhibits variable valency??


1.Lead
2.Sodium
3.Barium
4.Potassium ​

Answer 1

Answer:

Answer

Correct option is

A

Iron

Iron shows variable valency i.e. 2 and 3. Silver, sodium has valency of 1. Zinc has valency of 2.

Hence the correct option is A.

Answer 2

Certain elements have more than one valency. They exhibit variable valency. For example, copper, tin, iron and mercury exhibit variable valency.

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