Which of the following species is neither hyp | vedclass

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(D) species is hypervalent if the central atom has more than $8$ electrons in its valence shell,and hypovalent if it has fewer than $8$ electrons.$(a)

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$CO_3^{2-}$

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(D) species is hypervalent if the central atom has more than $8$ electrons in its valence shell,and hypovalent if it has fewer than $8$ electrons.$(a)$ In $ClO_4^-$,the central $Cl$ atom has $14$ valence electrons,so it is hypervalent.$(b)$ In $BF_3$,the central $B$ atom has $6$ valence electrons,so it is hypovalent.$(c)$ In $SO_4^{2-}$,the central $S$ atom has $12$ valence electrons,so it is hypervalent.$(d)$ In $CO_3^{2-}$,the central $C$ atom has $8$ valence electrons (octet is complete),so it is neither hypervalent nor hypovalent.

Which of the following species is neither hypervalent nor hypovalent?

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