A) \[1{{s}^{2,}}2{{s}^{2}}2{{p}^{4}}\]
B) \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}\]
C) \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{1}}\]
D) \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{1}}\]
Correct Answer: C
Solution :
Alkali metals after losing one electron acquire noble gas configuration, from which very high energy is required to remove the second electron thus have highest second ionisation energy.You need to login to perform this action.
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