Which of the following has ppi-dpi bonding? | vedclass

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(B) In $SO_3^{2-}$,the central sulfur atom has an expanded octet and utilizes its vacant $d$-orbitals to form $\pi$-bonds with oxygen atoms.Specifical

Vedclass · Accepted Answer

$SO_3^{2-}$

Vedclass · Answer

(B) In $SO_3^{2-}$,the central sulfur atom has an expanded octet and utilizes its vacant $d$-orbitals to form $\pi$-bonds with oxygen atoms.Specifically,the lone pair on the oxygen atom is donated into the vacant $d$-orbital of the sulfur atom,resulting in $p\pi-d\pi$ bonding.In contrast,$NO_3^-$,$BO_3^{3-}$,and $CO_3^{2-}$ involve elements from the second period ($N$,$B$,$C$),which lack $d$-orbitals,and thus only exhibit $p\pi-p\pi$ bonding.Therefore,the correct option is $B$.

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

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