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Q.

The atom/ion that has the highest number of unpaired electrons is

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a

$S^{2 -}$

b

${Ti}^{3 +}$

c

F^-

d

${Mg}^{2 +}$

answer is C.

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Detailed Solution

Mg²⁺ has no unpaired electrons, F^- has no unpaired electrons, S^2- also has zero unpaired electrons. Ti³⁺ has one unpaired electron.

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The atom/ion that has the highest number of unpaired electrons is