Question

Given below are two statements: Statement I: The number of pairs, from the following, in which {both the ions are coloured} are \([\text{Sc}^{3+},\text{Ti}^{3+}]\), \([\text{Mn}^{2+},\text{Cr}^{2+}]\), \([\text{Cu}^{2+},\text{Zn}^{2+}]\) and \([\text{Ni}^{2+},\text{Ti}^{4+}]\). Statement II: \(\text{Ti}^{4+}\) is the strongest reducing agent among \(\text{Th}^{4+}, \text{Ce}^{4+}, \text{Gd}^{3+}\) and \(\text{Eu}^{2+}\). In the light of the above statements, choose the correct answer.

• A. Statement I is true but Statement II is false
• B. Statement I is false but Statement II is true
• C. Both Statement I and Statement II are false
• D. Both Statement I and Statement II are true

Hint:

Colour in transition-metal ions depends on partially filled \(d\)-orbitals, while reducing power increases with ease of oxidation.

Answer 1

The Correct Option is C