Home Chemistry Classification of Elements and Periodicity Development of Periodic Table, Period, Group and Block The elements with atomic numbers 9, 17, 35, …
Chemistry Classification of Elements and Periodicity Development of Periodic Table, Period, Group and Block Single Correct MCQ
Published on: August 12, 2026

The elements with atomic numbers 9, 17, 35, 53, 85 are all :

A
Halogens
B
Noble gases
C
Heavy metals
D
Light metals

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The correct answer is:
A

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