Which of the following has $\mathrm{p} \pi-\mathrm{d} \pi$ bonding $?$

Which of the following has $\mathrm{p} \pi-\mathrm{d} \pi$ bonding $?$
  1. $\mathrm{NO}_{3}^{-}$
  2. $\mathrm{SO}_{3}^{2-}$
  3. $\mathrm{BO}_{3}^{3-}$
  4. $\mathrm{CO}_{3}^{2-}$

Solution

$\mathrm{p} \pi-\mathrm{d} \pi$ bonding is present in $\mathrm{SO}_{3}^{2-}, \mathrm{N}, \mathrm{B}$,
C have no vacant $\mathrm{d}$ atomic arbitals.
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Asked in: JEE-TOPICTESTS-CHEMISTRY

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