question_answer

    In the following, the element with the highest ionlsatlon energy is

A)  \[[Ne]3{{s}^{2}}3{{p}^{1}}\]                      

B)  \[[Ne]\,3{{s}^{2}}3{{p}^{3}}\]

C)  \[[Ne]\,3{{s}^{2}}3{{p}^{2}}\]                   

D)  \[[Ne]\,3{{s}^{2}}3{{p}^{4}}\]

Correct Answer: B

Solution :

                \[[Ne]\] Elements having half filled or fully filled orbitals are more stable. Hence, much energy is required to remove an electron from the outermost orbit. So,\[[Ne]\text{ }3{{s}^{2}}3{{p}^{3}}\]has highest ionisation energy.