Answer
See the answer below.
Work Step by Step
$B.O.=N.\ Shared\ pairs\div N.\ links$
a) CH bonds:
$2/2=1$
CO bond:
$2/1=2$
b) SO bonds:
$4/3=1.33$
c) NO bonds:
$4/2=2$
d) NO bond:
$2/1=2$
NCl bond:
$1/1=1$
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