The compound in which the cation is isoelectr | vedclass

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(D) The correct answer is $(D)$.In $K_2S$,the compound consists of $K^{+}$ and $S^{2-}$ ions.The atomic number of $K$ is $19$,so the $K^{+}$ ion has $

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$K_2S$

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(D) The correct answer is $(D)$.In $K_2S$,the compound consists of $K^{+}$ and $S^{2-}$ ions.The atomic number of $K$ is $19$,so the $K^{+}$ ion has $19 - 1 = 18$ electrons.The atomic number of $S$ is $16$,so the $S^{2-}$ ion has $16 + 2 = 18$ electrons.Since both $K^{+}$ and $S^{2-}$ have $18$ electrons,they are isoelectronic.

The compound in which the cation is isoelectronic with the anion is

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