Question

Na has a larger second ionization energy than Mg? True or false.

Answer 1

Ans - true

Explanation -

Na have electronic configuration - 1s²2s²2p⁶3s¹ thus last shell contain 1 electron after loosing this electron Na occupy nobel gas configuration and it is very stable therefore it is difficult to loose second electron from second shell therefore require more energy

Mg have electronic confguration - 1s²2s²2p⁶3s² last shell contan 2 electron and after loosing 2 electron Mg occupy

nobel gas configuration therefore to loose second electron is easy require less energy.