JEE Advanced 2015 Chemistry question

ChemistryCoordination CompoundsJEE Advanced 2015

For the octahedral complexes of in (thiocyanato-S) and in ligand environments, the difference between the spin-only magnetic moments in Bohr magnetons (when approximated to the nearest integer) is [Atomic number of Fe = 26]

Answer: 4

Solution

is . (S-bonded) is a weak-field ligand: high-spin with 5 unpaired electrons,

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Question ID VK-026387