Statement I: Transition metal ions are brightly coloured.
Statement II: The electrons in partially filled d-orbitals are easily promoted to excited states.
Statement I and II are correct but II is not correct explanation of I.
Statement I and II are correct but II is correct explanation of I.
Statement I is incorrect.
Statement II is incorrect.
As due to transition from the lower energy level to the higher energy level, the electrons absorb energy and then emit energy when these come back to initial state. That energy fall in the visible light wavelength.