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JEE Main Chemistry question

ChemistryCoordination CompoundsJEE Main

Among the following complexes (–): (), (), (), (), and (), the diamagnetic complexes are **[IIT JEE 2011]**

Answer: (D)

Solution

: () with strong-field is low-spin (), leaving 1 unpaired electron — paramagnetic. : () with is low-spin (), 0 unpaired — diamagnetic. : octahedral () complexes are essentially always low-spin because of the very large CFSE of

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Question ID VK-155357