A solution of a metal ion when treated with KI gives a red precipitate which dissolved in excess KI to give a colourless solution. Moreover, the solution of metal ion on treatment with a solution of cobalt (II) thiocyanate gives rise to a d

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A solution of a metal ion when treated with KI gives a red precipitate which dissolved in excess KI to give a colourless solution. Moreover, the solution of metal ion on treatment with a solution of cobalt (II) thiocyanate gives rise to a deep blue crystalline precipitqte. The metal ion is

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Correct answer: B. Hg ²⁺

aligned & Hg ²⁺+2 I ⁻ HgI ₂, HgI ₂+ H ⁻ & (Excess) . HgI ₄ ]²⁻ & Soluble ²⁻ & Hg ²⁺+ Co ( SCN )₂ Hg ( SCN )₂ aligned Blue crystalline ppt.

A solution of a metal ion when treated with KI gives a red precipitate which dissolved in excess KI to give a colourless solution. Moreover, the solution of metal ion on treatment with a solution of cobalt (II) thiocyanate gives rise to a deep blue crystalline precipitqte. The metal ion is

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