Question

On going from top to bottom in a group the valency
a. Increases
b. Decreases
C.
Remains the same
d. First increases then decreases​

Answer 1

Explanation:

The number of electrons present in the outermost shell are called valence electrons. If we move from top to bottom in a group, the number of valence electrons remains the same. ... As valence electrons remain the same on moving top to bottom, so the valency also remains the same on going down the group