CDS 2012 PYQ with Answer — The elements of a group in the periodic table

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Atlas Essay Optional Vistaar

UPSC CDSCombined Defence Services Overview

Test Series

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Overview Daily Quiz Mock Tests All-India PYQs Practice

CDS 2012 · General Knowledge (CDS-I)Q21

Back to the full 2012 paper

2012 · Q21

The elements of a group in the periodic table

General KnowledgeChemistry

Ahave similar chemical properties
Bhave consecutive atomic numbers
Care isobars
Dare isotopes

Explanation

Elements in the same group have the same valence electron configuration, giving similar chemical properties.

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