question_answer

Which of the following has the highest first ionization potential?

A)  Boron                                  

B)  Nitrogen

C)  Oxygen                              

D)  Carbon

Correct Answer: B

Solution :

                 lonization Potential: The amount of energy required to remove an electron from the outermost orbit of a gaseous atom is known as ionization energy. In B, N, O and C Nitrogen has completely half filled stable configuration. \[{{\,}_{7}}N=1{{s}^{2}},2{{s}^{2}},2{{p}^{3}}\]   Due to this stable configuration it is difficult to remove an electron and hence required more energy than others. So, nitrogen has highest first ionization potential.