A) \[n{{s}^{1}}\]
B) \[n{{s}^{2}}\]
C) \[n{{p}^{6}}\]
D) \[n{{s}^{2}}(n-1){{d}^{10}}\]
Correct Answer: B
Solution :
Alkaline earth metals are the element of IIA group. Hence the electronic configuration of their outermost shell is\[n{{s}^{2}}\].
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