The group \(14\) elements A and B have the first ionisation enthalpy values of \(708\) and \(715\mathrm{kJ}{\mathrm{mol}…

The group \(14\) elements A and B have the first ionisation enthalpy values of \(708\) and \(715\mathrm{kJ}{\mathrm{mol}}^{-1}\) respectively. The above values are lowest among their group members. The nature of their ions \({\mathrm{A}}^{2+}\) \({\mathrm{B}}^{4+}\) respectively is

[JEE Main 2025, 7 Apr (Shift 1)]