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
A. Both Statement I and Statement II are false
[Sc³⁺, Ti³⁺] has Sc³⁺ colorless (no d-electrons) and Ti³⁺ colored; [Mn²⁺, Cr²⁺] has Mn²⁺ colorless (d⁵ half-filled, no d-d transitions) and Cr²⁺ colored; [Cu²⁺, Zn²⁺] has Cu²⁺ colored and Zn²⁺ colorless (d¹⁰ filled); [Ni²⁺, Ti⁴⁺] has Ni²⁺ colored and Ti⁴⁺ colorless (no d-electrons). Zero pairs have both ions colored. Statement I is FALSE. Th⁴⁺ is not a reducing agent. Statement II is FALSE. Both statements are false.
Related: Chemistry — d and f Block Elements · All PYQ Banks