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JEE Main Chemistry question

ChemistryCoordination CompoundsJEE Main

Which one of the following cyano complexes would exhibit the lowest value of paramagnetic behaviour? (Atomic no. Cr, Mn, Fe, Co) **[AIEEE 2005]**

Answer: (A)

Solution

is a strong-field ligand, giving low-spin complexes. () in a low-spin octahedral field has configuration — zero unpaired electrons (diamagnetic), the lowest possible

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Question ID VK-155341