208. The number of shared electron pairs in the molecule of which two compounds is not equal? (1) $SO_2$ , $HCN$ (2) $PF_5$ , $HNO_3$ (3) $HCOOH$ , $CH_3OH$ (4) $H_2CO_3$ , $N_2O_4$
\textbf{208.} The number of shared electron pairs in the molecule of which two compounds is \textbf{not equal}?
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(1) $SO_2$ , $HCN$ \hfill (2) $PF_5$ , $HNO_3$
(3) $HCOOH$ , $CH_3OH$ \hfill (4) $H_2CO_3$ , $N_2O_4$
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