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JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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Analyzing +4 | -1

The ionic radius of ‘Cr’ is minimum in which of the following compounds?

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Correct option: B

{\mathrm{K}_2}\mathrm{Cr}{\mathrm{O}_4}

Option B is correct because Cr has the highest oxidation state (+6) in K2CrO4, leading to the smallest ionic radius due to increased effective nuclear charge.

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