JEE Main Chemistry question

Which substance has the greatest ionic character?

(A)
(B)
(C)
(D)Correct

Answer: (D)

Solution

Covalent character (by Fajan's rule) is favoured by a small, highly charged cation and a large, easily polarisable anion; ionic character is favoured by the opposite. Comparing the cations/central atoms in (via ), (via -like

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Question ID VK-155913