Which is the lightest element?

General Science · General Awareness · Medium · Practice for RRB Group D, RRB NTPC CBT 1, SSC CGL Tier 1, SSC CGL Tier 2, SSC CHSL Tier 1

Which is the lightest element?

Lithium
Helium
Hydrogen
Oxygen

Answer and solution

Correct answer: C) Hydrogen

Hydrogen has atomic number 1.

Learn the method: General Science rules and worked examples

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