By completing the following structures, adding unshared `e^(-)` pairs when necessary calculate the charges
(a) `N -= C - -=N`
`CI - C-=N`

`[O-underset(O)underset(||)overset(O)overset(||)(CI)-O]^(Theta`
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Explanation

`FC` on an atom =`{:[("Total no. of"),("velence "e^(-,)s),((V))]:}-{:[("Total no. of"),("non-boding "e^(-,)s),((nb))]:}-1/2{:[("Total no. of"),("bonding " e^(-,)s),((b))]:}`
`(or) FC = (V) - (nb) - (1)/(2) (b)`
(a) `overset(* *)N-= C - C -=overset(* *)N` (All zero)
`FC on N = (V) - (nb) - (1)/(2) (b) = 5 -2 - (1)/(2) xx 6 = zero`
`FC on C = 4 - 0 - (1)/(2) xx 8 = Zero`
`[:underset(..)overset(..)(C1) - C -=overset(..)N]` (All zero)
`FC on CI = (V) - (nb) - (1)/(2) (b) = 7 - 6 - (1)/(2) xx 2 = zero`
`FC on C =4 - 0 - (1)/(2) xx 8 = zero`
`FC on N = 5 - 2 - (1)/(2) xx 6 = zero`
`FC on CI^(1) = 7 - 4 - (1)/(2) xx 4 = + 1`
`FC on CI^(2) = 7 -6 - (1)/(2) xx 2 = zero`
`FC on C =4 - 0 - (1)/(2) xx 8 = zero`
`FC on O = 6 - 6 - (1)/(2) xx 2 = - 1`
`FC on CI = 7 - 0 - (1)/(2) xx 12 = + 1`
`FC on O^(1) = 6- 6 - (1)/(2) xx 2 = - 1`
`FC on O^(2) = 6 - 4 - (1)/(2) xx 4 = zero`
`FC on N = 5 - 0 - (1)/(2) xx 8 = + 1`
`FC on B = 3 - 0 - (1)/(2) xx 8 = - 1`


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