Question

Among the following, the compound that is both
paramagnetic and coloured is
(a) K₂Cr₂O₇ (b) (NH4₄)₂(TiCl₆)
(c) CoSO₄ (d) K3[Cu(CN)₄]

Answer 1

Answer:

c. will be the correct answer

Answer 2

Answer:

In VOSO

4 we have no VO + ion in which oxidation state of V is +3.

So, the electronic configuration for V

3+ is [Ar] 3d 2 4s 0 because of presence of 2 unpaired e s it is paramagnetic and coloured as well.K 2 Cr 2 O 7 - diamagnetic -orange

(NH ) 2 [TiCl6 ]- diamagnetic - colourlessK 3 [Cu(CN) 4 ] - diamagnetic- colourless.