The bivalent metal ion having maximum paramagnetic behaviour among the first transition series elements is
The bivalent metal ion having maximum paramagnetic behaviour among the first transition series elements is
A. `Mn^(2+)`
B. `Cu^(2+)`
C. `Sc^(2+)`
D. `Cu^(+)`
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Correct Answer - A
(a) `Mn^(2+)(3d^(9)4s^(@)) to` 5 unpaired electrons.
(b) `Cu^(2+)(3d^(9)4s^(@)) to ` 1 unpaired electrons.
(c) `Sc^(2+)(3d^(1)4s^(@)) to ` 1 unpaired electron.
(d) `Cu^(+)(3d^(10)4s^(@)) to ` 0 unpaired electron.
`Mn^(2+)` ion is maximum paramagnetic in nature.
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