Which of the following sequences does not con | vedclass

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(C) Isoelectronic species are those that have the same number of electrons.$1$. For $BO_3^{3-}, CO_3^{2-}, NO_3^-$: Total electrons are $5+3(8)+3 = 32

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$SO_3^{2-}, CO_3^{2-}, NO_3^-$

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(C) Isoelectronic species are those that have the same number of electrons.$1$. For $BO_3^{3-}, CO_3^{2-}, NO_3^-$: Total electrons are $5+3(8)+3 = 32$,$6+3(8)+2 = 32$,and $7+3(8)+1 = 32$. These are isoelectronic.$2$. For $CN^-, N_2, C_2^{2-}$: Total electrons are $6+7+1 = 14$,$7+7 = 14$,and $6+6+2 = 14$. These are isoelectronic.$3$. For $SO_3^{2-}, CO_3^{2-}, NO_3^-$: $SO_3^{2-}$ has $16+3(8)+2 = 42$ electrons,while $CO_3^{2-}$ and $NO_3^-$ have $32$ electrons. Thus,this sequence is not isoelectronic.$4$. For $PO_4^{3-}, SO_4^{2-}, ClO_4^-$: Total electrons are $15+4(8)+3 = 50$,$16+4(8)+2 = 50$,and $17+4(8)+1 = 50$. These are isoelectronic.

Which of the following sequences does not contain an isoelectronic species?

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