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Which of the following ions has the maxi...

Which of the following ions has the maximum magnetic moment?

A

`Mn^(2+)`

B

`Fe^(2+)`

C

`Ti^(2+)`

D

`Cr^(2+)`

Text Solution

Verified by Experts

`""_(25)Mn=[Ar]^(18)3d^(5)4s^(2).thereforeMn^(2+)=[Ar]^(18)3d^(5)`
`""_(26)Fe=[Ar]^(18)3d^(6)4s^(2).thereforeFe^(2+)=[Ar]^(18)3d^(6)`
`""_(22)Ti=[Ar]^(18)3d^(2)4s^(2). thereforeTi^(2+)=[Ar]^(18)3d^(2)`
`""_(24)Cr=[Ar]^(18)3d^(5)4s^(1).thereforeCr^(2+)=[Ar]^(18)3d^(4)`
Thus `Mn^(2+)` has maximum number of unpaired electrons.
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