Statement I: The number of pairs, from the following, in which both the ions are coloured in aqueous solution is 3. [2026]

Question

Given below are two statements:

Statement I: The number of pairs, from the following, in which both the ions are coloured in aqueous solution is 3.

$[[{Sc}^{3 +}, {Ti}^{3 +}]], [[{Mn}^{2 +}, {Cr}^{2 +}]], [[{Cu}^{2 +}, {Zn}^{2 +}]] and [[{Ni}^{2 +}, {Ti}^{4 +}]]$

Statement II: ${Th}^{4 +}$ is the strongest reducing agent among ${Th}^{4 +}, {Ce}^{4 +}, {Gd}^{3 +} and {Eu}^{2 +} .$

In the light of the above statements, choose the correct answer from the options given below. [2026]

Smart Achievers · Accepted Answer

(2)

${Sc}^{3 +}, {Ti}^{4 +} {and Zn}^{2 +} are colourless$

${Th}^{4 +} cannot act as a reducing agent.$

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