Can you explain why is valency of N2 Is 3 though there are 2 atoms of N in N2 molecule
The atomic number of nitrogen is 7. It’s electronic configuration is (2, 5). It requires 3 electrons to complete its outermost shell (Valence shell).
The valency of nitrogen in N2 is three since each nitrogen atom participates in three bonds.
For nitrogen molecule as a whole, valency is zero.