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Which element is the lightest and most abundant chemical element in the universe?

ALithium
BHelium
CHydrogen
DCarbon

Explanation

Hydrogen is the lightest element (atomic number 1) and constitutes ~75% of elemental mass in the universe.

Exam Relevance
  • Topic: Physical Sciences, Chemistry & Technology
  • Subtopic: SI Units, Instruments, Chemical Compounds & Optics
Submitted by: mcqstutor Team More Everyday Science MCQs →

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