Question

find the valency of nitrogen and chlorine and write the meaning of valency

Answer 1

Valency is the combining capacity of an atom or simply the no. Of electrons lose gain shared to achieve stable electronic configuration
Valency of Nitrogen is -3
Valency of chlorine is -1

Answer 2

nitrogen = -3
clroine = -1
valency = the valency of an element is the no. of atoms which combine or displayed by atom of the element