According to octet rule, $S O_{3}$ contains ______ dative bonds.

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Solution

The correct option is C 2
Valence electrons in $S$ =6
total valence electrons= $6 + 3 \times 6 = 24 e^{-}$
According to octet rule, the Lewis structure consists of an double bond ( $S = O$ ) and two dative bonds $S–O$ to complete its octet as:
Two dative bonds , $2 b o n d \times 2 e^{-} = 4$
One double bond , $2 \times 2 e^{-} = 4$
together containing 8 electrons.

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