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JEE CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

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C{r^{2 + }}\,\,\mathrm{and}\,\,M{n^{2 + }}

respectively are

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Correct option: A

Reductant and oxidant

Option A (Reductant and oxidant) is correct because

C{r^{2 + }}

tends to oxidize to

C{r^{3 + }}

(reductant) and

M{n^{2 + }}

can be oxidized further but also can be reduced (oxidant).

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Eu, Cm, Er, Tb, Yb and Lu Statement-I:

{Sm}^{3+}

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\mathrm{Ti}{\mathrm{O}_2}

\mathrm{BaS}{\mathrm{O}_4}