Question

What is the valency of nitrogen atom in ${\mathrm{NH}}_3$?

Answer 1

Valency

• The combining power (or capacity) of an element is known as its valency.

Valency of nitrogen atom in ${\mathrm{NH}}_3$

• The electronic configuration of nitrogen is $1s^{2}2s^{2}2p^3$.
• Nitrogen has five electrons in its outer most shell, so it can accept 3 electrons to fulfill the octet structure.
• So, the valency of the nitrogen atom in ${\mathrm{NH}}_3$ is $3$.