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The d-and f-Block Elements

General Properties of the Transition Elements (d-Block)

A solution of a metal ion when treated with KI gives a red pre

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A solution of a metal ion when treated with KI gives a red precipitate which dissolves 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 precipitate. The metal ion is

Name: Video solution 1: A solution of a metal ion when treated with KI gives a red precipitate which dissolves 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 precipitate. The metal ion is
Uploaded: 2022-08-29T12:40:46.000Z
Duration: 4 min
Description: Video solution 1: A solution of a metal ion when treated with KI gives a red precipitate which dissolves 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 precipitate. The metal ion is

Pb^{2 +}

Hg^{2 +}

Cu^{2 +}

Co^{2 +}

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A solution of a metal ion when treated with KI gives a red precipitate which dissolves 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 precipitate. The metal ion is

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Text solutionVerified

(b)

Hg^{2 +}

Hg^{2 +} + KI \to HgI_{2}

(Red Ppt.)

HgI_{2} + KI \to K_{2} HgI_{4}

( Soluble)

HgI^{2 +} + Co (SCN)_{2} \to Hg (SCN)_{2}

(Blue crystalline ppt.)

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Question Text	A solution of a metal ion when treated with KI gives a red precipitate which dissolves 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 precipitate. The metal ion is
Updated On	Sep 8, 2022
Topic	The d-and f-Block Elements
Subject	Chemistry
Class	Class 12
Answer Type	Text solution:1 Video solution: 2
Upvotes	322
Avg. Video Duration	8 min

A solution of a metal ion when treated with KI gives a red precipitate which dissolves 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 precipitate. The metal ion is

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A solution of a metal ion when treated with KI gives a red precipitate which dissolves 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 precipitate. The metal ion is

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