Unequal bond lengths are present in:

B F_{3}

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C O_{3}^{2 -}

(present in

C a C O_{3}

)

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H N O_{3}

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S O_{4}^{2 -}

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Solution

The correct option is C $H N O_{3}$
$H N O_{3}$ has both covalent and co-ordinate bonds. So, unequal bond length are present.
While the structure of $B F_{3}, C O_{3}^{- 2}, S O_{4} - 2$ is symmetrical and all bond lengths are equal due to resonance.

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Similar questions

How many bonds are present in ${C O_{3}}^{2 -}$ ion?

d π - p π

S O_{2}, S O_{3}, C l O_{4}^{-}

H N O_{3}

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