In which of the following paris both the ions are coloured in aqueous solution? (Atomic number, `Sc - 21, Ti = 22, Ni = 28, Cu = 29, Co = 27)`A. `Ni^(2+)` and `Cu^(+)`B. `Sc^(3+)` and `Ti^(3+)`C. `Sc^(3+)` and `Co^(2+)`D. `Ni^(2+)` and `Ti^(3+)`

In which of the following paris both the ions are coloured in aqueous

1.	In which of the following paris both the ions are coloured in aqueous solution? (Atomic number, `Sc - 21, Ti = 22, Ni = 28, Cu = 29, Co = 27)`A. `Ni^(2+)` and `Cu^(+)`B. `Sc^(3+)` and `Ti^(3+)`C. `Sc^(3+)` and `Co^(2+)`D. `Ni^(2+)` and `Ti^(3+)`
Answer» Correct Answer - D `Ni^(2+)` and `Ti^(3+)` ions coloured in aqueous solution because they contain unpaired electrons.

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In which of the following paris both the ions are coloured in aqueous solution? (Atomic number, `Sc - 21, Ti = 22, Ni = 28, Cu = 29, Co = 27)`A. `Ni^(2+)` and `Cu^(+)`B. `Sc^(3+)` and `Ti^(3+)`C. `Sc^(3+)` and `Co^(2+)`D. `Ni^(2+)` and `Ti^(3+)`

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