Question

Valency of iron is either 2 or 3.

• A. True
• B. False

Answer 1

The correct option is A True

Valency of iron can either be 2 or 3. Depending upon the conditions , iron atoms that participate in the chemical reaction will either be 2 or 3. Hence iron exbits variable valency.

For example,
(a) During the formation of ferrous oxide ($FeO$), the valency of iron is 2.
(b) During the formation of ferric oxide ($F{e}_2{O}_3$), the valency of iron is 3.