Question

Explain why Gd 3+ ion is colourless ​

Answer 1

Explanation:

This is because,here 4f orbitals are half filled,hence stable.As such f-f transitions are not possible because they will destroy the symmetry of 4f and make them unstable . Due to this,GD^+3 ion does not absorb any wavelength from white light and hence it is colourless.

Answer 2

Answer:

This is because,here 4f orbitals are half filled,hence stable.As such f-f transitions are not possible because they will destroy the symmetry of 4f and make them unstable . Due to this,GD^+3 ion does not absorb any wavelength from white light and hence it is colourless.