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

Options

A. `[Ne] 3 s^(2) 3p^(1)`
B. `[Ne]3 s^(2) 3p^(3)`
C. `[Ne] 3s^(2) 3p^(2)`
D. `[Ne] 3s^(2) 3p^(4)`

Answer

B

Explanation

Due to greater stability of half- filled 3p- orbitals the element with configuration ( b) has the highest ionization enthalpy.
Due to highest effective nuclear charge , it has the first ionization enthalpy.
Due to highest effective nuclear charge , it has the first ionization enthalpy.