The colourless species is

The colourless species is
  1. $\mathrm{VCl}_3$
  2. $\mathrm{VOSO}_4$
  3. $\mathrm{Na}_3 \mathrm{VO}_4$
  4. $\left.\mathrm{V}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{SO}_4 \cdot \mathrm{H}_2 \mathrm{O}$

Solution

$\mathrm{Na}_3 \mathrm{VO}_4$ contains colourless ortho-vanadate $\left(\mathrm{VO}_4^{3-}\right)$ ion.

Asked in: NEET 2020 (Phase 1)

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