QUIZ: Most Can’t Pass This Basic Science Test

What is the most common element in the universe?

Retry Correct Incorrect Hydrogen, atomic number 1, is a colorless, odorless, and flammable gas. With just proton and one electron, hydrogen is both the simplest and the most common element in the universe.

What is the most common element in the universe?

  • Hydrogen
  • Carbon dioxide
  • Oxygen
  • Helium
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