Chemistry · D and f Block Elements

Transition metals show colored complexes due to their d-d transitions.

Transition metals show colored complexes due to their d-d transitions.

This option is incorrect. Electrons do not typically transition from p to d orbitals in Cu²⁺ because the valence electrons are mainly in d orbitals rather than p orbitals. Such transitions are less common in transition metals compared to d–d transitions.

This option is incorrect. p to p transitions occur in non-transition elements but not in Cu²⁺, as copper primarily involves d-orbital electron transitions.

This option is incorrect. s to p transitions are common in alkali and alkaline earth metals, but not in transition metal ions like Cu²⁺, which have electrons in d orbitals.