Give four examples of species which are isoelectronic with $C a^{2 +} .$

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Solution

$A r, K^{+}, C l^{-}, S^{2 -}$ or $P^{3 -}$ are isoelectronic with $C a^{2 +}$ .

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S^{2 -}, N a^{+}, C a^{2 +}, C l^{-}

S^{2 -}, N a^{+}, C a^{2 +}, C l^{-}

Statement - I: $C l^{-} a n d C a^{2 +}$ are isoelectronic species.
Statement - II: Isoelectronic species should have same charges.

\begin{matrix} C l^{-}, A r, K^{+}, O^{2 -}, M g^{2 +}, F^{-} \end{matrix}

C a^{2 +}

C l^{-}

A r

C a^{2 +}

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