1.

The magnetic moment of a compound of cobalt is 3.87BM, the compound is….

Answer»

`[CO(H_(2)O)_(6)]^(+3)`
`[Co(CN)_(6)]^(3-)`
`Co(NO_(3))_(3)`
`[Co(H_(2)O)_(6)]^(+2)`

SOLUTION :`[Co(H_(2)O)_(6)]^(+2)` has 3 unpaired electrons


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