Question

The values of ionisation enthalpy of elements of group 15 are more than the values of ionisation enthalpy of the group 14 in the same period, why ?

Answer 1

These elements demonstrate higher values of ionization enthalpy when contrasted with group 14 elements. This is because of their higher atomic charge, smaller nuclear radii, and stable half-filled electronic setups. As we move down the group, the ionization enthalpy values diminish. This is because of the progressive increment in the nuclear size.