1.

Which one of the following ions exhibit highest magnetic moment ?

Answer»

`Cu^(+2)`
`Ti^(+3)`
`Ni^(+2)`
`Mn^(+2)`

Solution :`Cu^(2+) = [AR] 4s^(0) 3D^(9)( 1 "unpaired " e^(-))`
`Ti^(+3) = [Ar]4s^(0) 3d^(1) ( 1 "unpaired" e^(-))`
`Ni^(+2) = [Ar] 4s^(0) 3d^(8) (2 " unpaired " e^(-))`
`Mn^(+2) = [Ar]4s^(0) 3d^(5) ( 5 " unpaired " e^(-))`


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