KCET2025Chemistryd and f Block Elements
In the following pairs, the one in which both transition metal ions are colourless is
Options
- ASc ³⁺, Zn ²⁺
- BV ²⁺, Ti ³⁺
- CZn ²⁺, Mn ²⁺
- DTi ⁴⁺, Cu ²⁺
Correct answer
A. Sc ³⁺, Zn ²⁺
Step-by-step solution
Ions with d ^ and d ¹⁰ donot show d.d transitions, hence colorless aligned & Sc ⁺³-[ Ar ] 3 ~d ^ 4s^ & Zn ⁺²-[ Ar ] 3 ~d ¹⁰ 4s^ aligned