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The set having ions which are coloured and paramagnetic both is

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${Cu}^{+}, {Zn}^{+ 2}, {Mn}^{+ 4}$

${Ni}^{+ 2}, {Mn}^{+ 7}, {Hg}^{+ 2}$

${Cu}^{+ 2}, {Cr}^{+ 3}, {Sc}^{+}$

${Sc}^{+ 3}, V^{+ 5}, {Ti}^{+ 4}$

answer is C.

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${Cu}^{+ 2}, {Cr}^{+ 3}, {Sc}^{+}$ are colored and paramagnetic.

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