Question

The colour of the transition metal ions is//are due to:
A. d-d transition of electrons in presence of ligands
B. charge transfer from ligand to metal ion.
C. change in the geometry
D. Polarisation of anion by cation

Answer 1

Correct Answer - ABD
(A) The colour of the transition metal ion/compound is attributed to d-d transition of electrons e.g. in `[Cu(CN_(3))_(4]^(2+)`.
Charge transger spectrum e.g. in `MnO_(4)^(-)`(no. d electron present).
The colour change is not because of change in the geometry of the molecules.
Yellow colour of the `Agl` is due to the polarisation of `l^(-)` by `ag^(+)`.