Identify the metal ions among Co 2+, Ni 2+, Fe 2+, V 3+ and Ti 2+ having a spin-only magnetic moment value more than 3.0 BM. The sum of unpaired electrons present in the high spin octahedral complexes

Question

Identify the metal ions among Co 2+, Ni 2+, Fe 2+, V 3+ and Ti 2+ having a spin-only magnetic moment value more than 3.0 BM. The sum of unpaired electrons present in the high spin octahedral complexes formed by those metal ions is ________.

Prashant Kotian · Accepted Answer

Correct answer: .. V 3+ = (Ar)18 3d Ti 2+ = (Ar)18 3d Ni 2+ = (Ar)18 3d Fe 2+ = (Ar)18 3d Co 2+ = (Ar)18 3d Only for Fe 2+ and Co 2+ µ is more than 3.0 B.M. Fe 2+ 3d n = 4, Co 2+ 3d n = 3,  > 3  > 3  Number of unpaired electrons = 4 + 3 = 7

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