Beryllium and magnesium do not give color to flame whereas other alkaline earth metals do so. Why?

Asked by Topperlearning User | 4th Jun, 2014, 01:23: PM

Expert Answer:

Generally the colour of flame of alkaline metals are due to the  reason that electrons are excited to higher energy levels and when they drop back to the ground state, energy is emitted in the form of visible light. Since the electrons in beryllium and magnesium are too strongly bound it cannot get excited by flame. Hence Beryllium and magnesium do not give color to flame.

Answered by  | 4th Jun, 2014, 03:23: PM