The pair of metal ions that can give a spin only magnetic moment of 3.9 B M for the complex [ M ( H 2 O ) 6 ] C l 2 , is:

Question

The pair of metal ions that can give a spin only magnetic moment of 3.9 B M for the complex [ M ( H 2 O ) 6 ] C l 2 , is:, C o 2 + and F e 2 +, V 2 + and F e 2 +, C r 2 + and M n 2 +, V 2 + and C o 2 +

MARKS App · Accepted Answer

If the complex is M H 2 O 6 C l 2 , M will have + 2 oxidation state and hence, it has already lost 2 electrons from s - orbital. Since it has μ = 3.9 = n ( n + 2 ) ⇒ n = 3 3 unpaired so, the configuration can either be:

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