In each period,the alkali metals...

Element having highest $I.P.$ value is

The correct values of ionization enthalpies (in $kJ \ mol^{-1}$) of $Si, P, Cl$ and $S$ respectively are

The incorrect relation among the following is

In which of the following electronic configurations of an element is there a very large difference between the second and third ionization energy?

Given below are two statements:
Statement $I$: The second ionization enthalpy of $B$,$Al$ and $Ga$ is in the order of $B > Al > Ga$.
Statement $II$: The correct order in terms of first ionization enthalpy is $Si < Ge < Pb < Sn$.