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

AIIMS 2017 · Chemistry · d and f Block Elements

The colourless species is

The colourless species is

Options

  1. AVCl3\mathrm{VCl}_3
  2. BVOSO4\mathrm{VOSO}_4
  3. CNa3VO4\mathrm{Na}_3 \mathrm{VO}_4
  4. D[V(H2O)6]SO4⋅H2O\left[\mathrm{V}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{SO}_4 \cdot \mathrm{H}_2 \mathrm{O}

Correct answer

C. Na3VO4\mathrm{Na}_3 \mathrm{VO}_4

Step-by-step solution

In Na3VO4\mathrm{Na}_3 \mathrm{VO}_4, vanadium is present in +5 oxidation state. V5+:3d04s0\mathrm{V}^{5+}: 3 d^0 4 s^0, does not have unpaired electron. Hence, Na3VO4\mathrm{Na}_3 \mathrm{VO}_4, is colourless species.
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