Multiple choice general knowledge science & technology

Which chemical element was found in gaseous state in the atmosphere surrounding the sun by scientist Pierre Janssen?

  1. Hydrogen

  2. Nitrogen

  3. Helium

  4. Oxygen
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pierre Janssen detected helium's unique spectral line in the solar corona during the 1868 solar eclipse, the first discovery of an element outside Earth. This element was later isolated on Earth in 1895. The name helium comes from Greek helios meaning sun, honoring its solar discovery.

Keep practicing — related questions