The magnetic property, dipole moment, plane of symmetry, colour and absorption band can be helpful i — Coordination Compounds Chemistry Question

💡 Solution & Explanation

[Ti(en)3]^4+: No. of unpaired e-s = 0. [Sc(NH3)4(H2O)2]^3+: No. of unpaired e-s = 0. [Zn(en)2(NH3)2]^2+: No. of unpaired e-s = 0. These complexes do not absorb light in visible range due to absence of unpaired electron and hence they are colourless. While, in complex [Cr(H2O)6]^3+ there are unpaired e-s and it is coloured due to absorption of light in visible range.