A) \[1{{s}^{2}},\,\,2{{s}^{2}}2{{p}^{2}}\]
B) \[1{{s}^{2}},\,\,2{{s}^{2}}2{{p}^{6}},\,\,3{{s}^{1}}\]
C) \[1{{s}^{2}},\,\,2{{s}^{2}}2{{p}^{6}},\,\,3{{s}^{2}}\]
D) \[1{{s}^{2}},\,\,2{{s}^{2}}2{{p}^{1}}\]
Correct Answer: C
Solution :
The biggest jump in 2nd and 3rd \[IE\] takes place in the case of alkaline earth metals. After losing two electrons the metal acquires noble gas configuration. Hence,\[I{{E}_{3}}>I{{E}_{2}}\] Thus,\[1{{s}^{2}},\,\,2{{s}^{2}},\,\,2{{p}^{6}},\,\,3{{s}^{2}}\]configuration is association with biggest jump between 2nd and 3rd\[IE\].
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