Multiple choice

Which of the following is the most abundant inert gas in the atmosphere?

  1. Helium

  2. Neon

  3. Argon

  4. Krypton

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Argon constitutes approximately 0.93% of Earth's atmosphere, making it the most abundant noble gas. Other noble gases like helium, neon, and krypton are present in much smaller quantities.