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MHT CET Chemistry question

ChemistryCoordination CompoundsMHT CET

Nickel (Z = 28) combines with an uninegative monodentate ligand to form a paramagnetic complex . The number of unpaired electron in the nickel and geometry of this complex ion are respectively [AIEEE 2006]

Answer: (D)

Solution

is with two unpaired electrons; a paramagnetic four-coordinate complex must therefore keep these electrons unpaired, which means

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Question ID VK-073231