Question

As we move along a period, the valency of elements :

• A. increases
• B. decreases
• C. remains same
• D. increases in the beginning and then decreases

Answer 1

The correct option is D increases in the beginning and then decreases

On moving across a period the number of electrons increases but as the valence electrons crosses $4$ it is easier for elements to accept electrons. So the valency decreases.

Hence, option $D$ is correct.