Published by:
CGP EDU Academic Team
Published on: August 12, 2026
The electronic configuration of four elements are given below. Which elements does not belong to the same family as others?
A
B
C
D
[Ar]3 
Text Solution
Verified by ExpertsThe correct answer is:
C
Elements , and belong to the same group since each one of them has two electrons in valence shell. In contrast, element has seven electrons in the valence shell, and hence it lies in another group.
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