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(a). Why Mn^(2+) compounds are more stab...

(a). Why `Mn^(2+)` compounds are more stable than `Fe^(2+)` towards oxidation to their `+3` state?
(b). Calculate the magnetic moment of `V^(3+)` ion.
(c). `[Ti(H_2O)_6_^(3+)` gives violet coloured aqueous solution but
`[Mg(H_2O)_6]^(2+)` solution is colourless.
(d). `[Ti(H_2O)_6]^(3+)` is coloured whereas `[Sc(H_2O)_6]^(3+)` is colourless. Why?

Text Solution

Verified by Experts

The electronic configuration of `V^(3+)` is `[Ar] 45^(@)` 3d^(2)` In the d-orbitals, there are 2 unpaired electrons.
`thereforemu= sqrt(n(n+2)) B.M.`
= `sqrt(2(2 + 2)) = sqrt8 B.M. = 2.73 B.M.`
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