Question

The valency of nitrogen in $N_2$ molecule is:

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

The correct option is C

3

Valency is the combining capacity of the element.
Nitrogen has atomic number 7. Electronic configuration of nitrogen can be written as:
$N=1s^2,2s^2,2p^3$
It has 5 electrons in its outermost shell and requires 3 more electrons in order to complete its L shell. Hence its valency is 3.