Question

Arrange the elements $$\mathrm{N},\mathrm{P},\mathrm{O}$$ and $$\mathrm{S}$$ in the order of increasing non metallic character. Give reason for the arrangement assigned.

Answer 1

$$\mathrm{P}<\mathrm{S}<\mathrm{N}<\mathrm{O}$$

Non-metallic character decreases down the group and increases from left to right in a period.