A) \[[Ne]\,3{{s}^{2}}3{{p}^{1}}\]
B) \[[Ne]\,3{{s}^{2}}3{{p}^{2}}\]
C) \[[Ne]\,3{{s}^{2}}3{{p}^{3}}\]
D) \[[Ar]\,3{{d}^{10}},\,4{{s}^{2}}4{{p}^{2}}\]
Correct Answer: C
Solution :
The energy required to remove an electron from the outermost orbit of an atom is known as ionization energy. \[{{P}_{15}}=[Ne]\,3{{s}^{2}}3{{p}^{3}}\] The outermost p subshell of phosphorus is half filled and half-filled orbitals are more stable. Therefore, it is comparatively difficult to remove the electrons from half-filled subshell.
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