The correct pair of electron affinity order is

The amount of energy released for the process $X_{(g)} + e^- \to X^-_{(g)}$ is minimum and maximum respectively for :-
$(a) \ F$
$(b) \ Cl$
$(c) \ N$
$(d) \ B$
Correct answer is :-

The process requiring the absorption of energy is

Correct order of electron affinity for $C$,$Si$,and $Ge$ is

The correct order of electron gain enthalpy of $N$,$O$,$Cl$,$Al$ is

If the electron affinity of an element $M$ is $x \ kJ/mol$,then the ionisation potential of this element is: