JEE Mains · Chemistry · STD 12 - 4. d and f- block elements
A pink coloured salt turns blue on heating. The presence of which cation is most likely ?
- A \(Co^{2+}\)
- B \(Cu^{2+}\)
- C \(Zn^{2+}\)
- D \(Fe^{2+}\)
Answer & Solution
Correct Answer
(A) \(Co^{2+}\)
Step-by-step Solution
Detailed explanation
\(Zn^{2+}\) salts are white. Usually \(Fe^{2+}\) salts are rarely pink. \(Cu^{2+}\) salts are usually blue in hydrated form. \(Co^{2+}\) is pink in aqueous solution
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