A large difference between the third and fourth ionization energies indicates the presence of:

A large difference between the fourth and fifth ionization energies indicates the presence of:

A large difference between the fourth and fifth ionization energies indicates the presence of:

The third ionization energy is least for:

The electronic configuration of an element with the largest difference between the 1^(st) and 2^(nd) ionization energies is

A sudden large difference between the values of second and third ionization energies of elements would be associated with which of the following electronic configurations?