The first ionization energy (in $kJ / mol$) of $Na, Mg, Al$ and $Si$ respectively,are

Which of the following processes will have the maximum ionization energy?

Amongst the following elements with their electronic configurations given below,which one has the highest ionization energy?

Which of the following electronic configurations represents the atom with the lowest first ionization enthalpy?

The successive ionisation energy values for an element $X$ are given below. Element $X$ belongs to which group?
$1^{st} \text{ IE} = 410 \ kJ \ mol^{-1}$
$2^{nd} \text{ IE} = 820 \ kJ \ mol^{-1}$
$3^{rd} \text{ IE} = 1100 \ kJ \ mol^{-1}$
$4^{th} \text{ IE} = 1500 \ kJ \ mol^{-1}$
$5^{th} \text{ IE} = 3200 \ kJ \ mol^{-1}$

The correct order of $C$, $N$, $O$ and $F$ in terms of second ionisation potential is