1.

An element has the electronic configuration \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{2}}\]. Its valency electrons are [NCERT 1973]

A.                 6             
B.                 2
C.                 3             
D.                 4
Answer» E.


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