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JEE Advance2007
Paper-2
Question
A solution of 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
Select the correct option:
A
$\mathrm{Pb}^{2+}$
B
$\mathrm{Hg}^{2+}$
C
$\mathrm{Cu}^{2+}$
D
$\mathrm{Co}^{2+}$
✓ Correct! Well done.
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