Which one of the following statements is correct in relation to the ionization enthalpy ?

Options

A. Electron`-` electron interaction in the outer orbitals of the elements increases the ionization enthalpy.
B. Removal of electron from orbitals bearing higher `'n'` value is easier than from orbitals having lower `'n'` value.
C. The ionization enthalpies of iso`-` electronic species, `F^(-)`, Ne and `Na^(+)` are same because their size and electron configuration are same.
D. End of valence electrons is indicated by a small jump in ionization enthalpy.

Answer

B

Explanation

As value of `'n' i.e.` principal quantum number increases, the size of atom increases and the distance between valence electron and nucleus increases. As a result, the attraction between the valence electrons and nucleus decreases. This fascilitates the easier removal of valence electrons.