Which of the following orders of ionization energy is correct?

The correct order of the second ionization energy of $C$,$N$,$O$,and $F$ is :-

Calculate the energy required to convert all atoms in $4.8 \ g$ of $Mg$ to $Mg^{2+}$ in the vapour state. $IE_1$ and $IE_2$ of $Mg$ are $740 \ kJ / mol$ and $1450 \ kJ / mol$ respectively.

Sodium generally does not show an oxidation state of $+2$,because of its

The $IE_1$ and $IE_2$ of three elements $A$,$B$,and $C$ are given as : ( $IE$ in $kJ/mol$ )

Element	$A, B, C$
$IE_1$	$400, 550, 1150$
$IE_2$	$2650, 1070, 2090$

Identify the element which represents a nonmetal.

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