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JEE Advanced 2008Paper 2
Exam
JEE Advanced
Year
2008
Paper
Paper 2
Subject
Chemistry
Chapter
Coordination Compounds

JEE Advanced 2008 · Paper 2 · Chemistry · Coordination Compounds

Among the following, the coloured compound is

Among the following, the coloured compound is

Options

  1. ACuCl\mathrm{CuCl}
  2. BK3[Cu(CN)4]\mathrm{K}_3\left[\mathrm{Cu}(\mathrm{CN})_4\right]
  3. CCuF2\mathrm{CuF}_2
  4. D[Cu(CH3CN4)]BF4\left[\mathrm{Cu}\left(\mathrm{CH}_3 \mathrm{CN}_4\right)\right] \mathrm{BF}_4

Correct answer

C. CuF2\mathrm{CuF}_2

Step-by-step solution

In CuF2,Cu2+\mathrm{CuF}_2, \mathrm{Cu}^{2+} ions exist, having d9d^9-configuration. Unpaired electron causes colour ( d−dd-d transition) In the crystalline form, CuF2\mathrm{CuF}_2 is blue coloured
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