A) \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{1}}\]
B) \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}\]
C) \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}\]
D) \[1{{s}^{2}}2{{s}^{2}}2{{p}^{5}}\]
Correct Answer: B
Solution :
Due to highly stable electronic configuration ionisation, potential of inert gas is maximum. If difference of ionisation potential between IInd and IIIrd are maximum it means after loss of two electrons species has inert gas configuration, so number of electrons present in valence orbit of such species will be two.
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