1.

Amongst the following ions which has the highest paramagnetism?

Answer»

`[Cr(H_(2)O)_(6)]^(3+)`
`[FE(H_(2)O)_(6)]^(+3)`
`[Cu(H_(2)O)_(6)]^(2+)`
`[ZN(H_(2)O)_(6)]^(2+)`

Solution :`[Cr(H_(2)O)_(6)]^(3+)-3` unpaired electrons.
`[Fe(H_(2)O)_(6)]^(2+)-4` unparied electrons.
`[Cu(H_(2)O)_(6)]^(2+)-1` unpaired electron.
`[Zn(H_(2)O)_(4)]^(2+)-` no unpaired electron.


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