1.

Which of the followingspecies is/are paramagnetic Fe^(2+),Zn^(0),Hg^(2+),Ti^(4+)

Answer»

`FE^(2+)` only
`ZN^(0)` and `Ti^(4+)`
`Fe^(2+)` and `Hg^(2+)`
`Zn^(0)` and `Hg^(2+)`

Solution :The outermost electronic configuration of Fe is
`Fe3d^(6)4s^(2)`
`Fe^(2+)3d^(6)4s^(0)`

Since `Fe^(2+)` has 4 unpaired electron it is paramagnetic in NATURE.


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