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JIPMER 2017
Exam
JIPMER
Year
2017
Subject
Chemistry
Chapter
d and f Block Elements

JIPMER 2017 · Chemistry · d and f Block Elements

Which of the following compound is not coloured?

Which of the following compound is not coloured?

Options

  1. ANa2CuCl\mathrm{Na}_2 \mathrm{CuCl}
  2. BNa2Cd⋅Cl4\mathrm{Na}_2 \mathrm{Cd} \cdot \mathrm{Cl}_4
  3. CFeSO4\mathrm{FeSO}_4
  4. DVI3\mathrm{VI}_3

Correct answer

B. Na2Cd⋅Cl4\mathrm{Na}_2 \mathrm{Cd} \cdot \mathrm{Cl}_4

Step-by-step solution

Na2Cd.Cl4\mathrm{Na}_2 \mathrm{Cd} . \mathrm{Cl}_4 has no unpaired electron due to presence of d10d^{10} electrons. Hence, Cd2+\mathrm{Cd}^{2+} is a colourless compound.
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