JEE Advanced Chemistry question

Chemistry Coordination Compounds JEE Advanced

exhibits temperature dependent magnetic behavior (paramagnetic/diamagnetic); the coordination geometries of in the paramagnetic and diamagnetic states are respectively

(A)Tetrahedral and tetrahedral
(B)Square planar and square planar
(C)Tetrahedral and square planarCorrect
(D)Square planar and tetrahedral

Answer: (C)

Solution

This complex can interconvert between a tetrahedral form (where, being a weaker-splitting geometry, () retains unpaired electrons — paramagnetic) and a square-planar form (where the stronger ligand-field splitting

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Question ID VK-160054