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JEE Main 2014 Chemistry question

ChemistryCoordination CompoundsJEE Main 2014

Nickel (Z = 28) combines with a uninegative monodentate ligand to form a diamagnetic complex . The hybridisation involved and the number of unpaired electrons present in the complex are respectively:

Answer: (1)

Solution

With four uninegative ligands and an overall charge of −2, nickel is in the +2 state, a ion. A diamagnetic four-coordinate complex must be square planar, in which the two electrons pair

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Question ID VK-104664