Answer
The correct answer is (a)
Work Step by Step
We know by the formula that formal charge = no.of valence electrons - (no.of nonbonding electrons + 1/2 no.of shared electrons)
In the given question, for nitrogen,
no. of valence electrons = 5
no. of nonbonding electrons = 0
no. of shared electrons = 8
Hence, using the formula, formal charge = +1
