In the electron-dot structure, calculate the formal charge from left to right nitrogen atom, `underset(..)overset(..)(N)=N=underset(..)overset(..)(N)`-

Options

A. `-1,-1,+1`
B. `-1,+1,-1`
C. `+1,-1,-1`
D. `+1,-1,+1`

Answer

B

Explanation

Formation charge=No. of valence electrons in the atom -No. of unshared electron`-(1)/(2)` No. of shared electrons.
In `{:(1,2,3),(underset(..)overset(..)(N)=,N=,underset(..)overset(..)(N)):}`
Formal charge on N-atom (1)=5-4-(4`-:`2)=-1
formal charge on N-atom (2)=5-0-(`8-:`2)=1
formal charge on N-atom (3)=5-4-(4`-:`2)=-1.