Answer
See the answer below.
Work Step by Step
$F.\ Charge= NVE-LPE-BE/2$
a) N: $5-2-6/2=0$
H: $1-0-2/2=0$
b) P: $5-0-8/2=+1$
O: $6-6-2/2=-1$
c) B: $3-0-8/2=-1$
H:$1-0-2/2=0$
d) N: $5-2-6/2=0$
O: N: $6-4-4/2=0$
H:$1-0-2/2=0$
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