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

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$SO_3^{2-}$

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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.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 $B$.

$Bond$	$E_{diss} (kJ \ mol^{-1})$
$C-A$	$240$
$C-B$	$328$
$C-C$	$276$
$C-D$	$485$

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

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$Bond$ $E_{diss} (kJ \ mol^{-1})$

$C-A$ $240$

$C-B$ $328$

$C-C$ $276$

$C-D$ $485$

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