1.

Which of the following is/are inner orbital complex as well as paramagnetic with magnetic moment equal to 3.78 (approx) ?

Answer»

`[Co(O X)_(3)]^(3-)`
`[Cr(NH_(3))_(6)]^(3+)`
`[Fe(H_(2)O)_(5)NO]^(2+)`
`[Zn(NH_(3))_(6)]^(2+)`

Solution :`Cr^(+3)=3d^(3)`

`d^(2)sp^(3), mu_(M)=3.78B.M.`


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