Engineering
Chemistry
Crystal Field Theory and Valence Bond Theory
Colour and Magnetism
Question
The correct order of the spin-only magnetic moment of metal ions in the following low spin complexes, [V(CN)6]4–, [Fe(CN)6]4–, [Ru(NH3)6]3+, and [Cr(NH3)6]2+ is
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Solution
| Complex | Configuration | No. of unpaired electrons |
| [V(CN6)]4– | t32g e0g | 3 |
| [Cr(NH3)6]2+ | t42ge0g | 2 |
| [Ru(NH3)6]3+ | t52ge0g | 1 |
| [Fe(CN)6]14– | t62ge0g | 0 |
Magnetic moment is directly proportional to number of unpaired electrons..