1.

The ratio of magnetic moments of Fe(III) & Co(ll) is

Answer»

`sqrt5 :sqrt7`
`SQRT(35) : sqrt(15)`
`7:3`
`sqrt(24) : sqrt(15)`

Solution :`Fe^(3+)` has 5 unpaired `e^-, CO^(2+) ` has 3 unpaired `e^-`
`sqrt(N(n+2)) = sqrt(35) sqrt(n(n+2)) = sqrt(15)`


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