A) \[1{{s}^{2}}2{{s}^{2}}2{{p}^{3}}\]
B) \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}\]
C) \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{2}}\]
D) \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}\]
Correct Answer: B
Solution :
Alkaline earth metals are 5-block, elements having ns2 general electronic configuration.
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