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Q.

The pair, in which ions are isoelectronic with Al³⁺ is :-

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a

${Cl}^{-} and {Li}^{+}$

b

${Br}^{-} and {Be}^{2 +}$

c

$S^{2 -} and K^{+}$

d

$O^{2 -} and {Mg}^{2 +}$

answer is D.

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Detailed Solution

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Isoelectronic species have same no. of electrons Al⁺³, O^2-, Mg⁺² all have 10 electrons.

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