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Q. The oxide of an element whose electronic configuration is $ 1{{s}^{2}},2{{s}^{2}},2{{p}^{6}},3{{s}^{1}} $ is

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Solution:

$ Na\,(11):1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{1}} $ It is an alkali metal. Alkali metal oxides are basic in nature.