Why the second ionization enthalpies of alkaline earth metals are lower than alkali metals?

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

Expert Answer:

The removal of second electron from alkaline earth metals leads to the stable octet state in M2+ ions. In case of alkali metals it is not so. Since the removal of electron leads to stability, hence it can easily removed leading to lowering of second ionization enthalpy in alkaline earth metals.

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