1.

An atmospheric oxide of a metalloid present in 15th group. The possible electronic configuration of that metalloid is

A. [Ar]3d10 4s24p3
B. [He] 2s22p3
C. [Ne] 3s2p3
D. [Xe] 4f14 5d10 6s2 6p3
Answer» B. [He] 2s22p3


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