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 an element.
Nitrogen has an atomic number of 7. Electronic configuration of nitrogen can be written as:
K L
N = 2 5
It has 5 electrons in its outermost shell and requires 3 more electrons in order to complete its L shell. Hence, each nitrogen atom shares 3 electrons and the valency of nitrogen in $N_2$molecule is 3.