question_answer

The electronic configuration of elements A, B and C are \[[He]2{{s}^{1}},\] \[[Ne]3{{s}^{1}}\] and \[[Ar]4{{s}^{1}}\] respectively. Which one of the following order is correct for \[I{{E}_{1}}(in\,kJ\,mo{{l}^{-1}})\]of A, B and C?

A) \[A>B>C\]       

B)        \[C>B>A\]

C) \[B>C>A\]       

D)        \[C>A>B\]