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CGP EDU Academic Team
Published on: August 14, 2026
A metal salt evolves the dark violet fumes of (X) with MnO 2 and this (X) gives the deep blue colouration with starch solution. Then number of lone pair on central atom in (X).
Text Solution
Verified by ExpertsThe correct answer is:
3
3
Ans. 3 I – + MnO 2 + H 2 SO 4 ⎯→ I 3 – + Mn 2+ + SO 4 2– + H 2 S
I 3 – + starch → Blue color due to starch Iodine complex
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