The aqueous solution containing which one of the following ions will be colourless (Atomic number `Sc = 21, Fe = 26, Ri = 22, Mn

The aqueous solution containing which one of the following ions will be colourless
(Atomic number `Sc = 21, Fe = 26, Ri = 22, Mn = 25)`
A. `Sc^(3+)`
B. `Fe^(2+)`
C. `Ti^(3+)`
D. `Mn^(2+)`

The aqueous solution containing which one of the following ions will be colourless (Atomic number `Sc = 21, Fe = 26, Ri = 22, Mn = 25)`

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