The element helium was first discovered and identified as a separate element
A) in natural gas originating underground, from the spectrum emitted from a flame of burning natural gas.
B) in rocks containing radioactively decaying elements such as uranium.
C) on the Sun, from the emitted spectrum from its upper atmosphere.
D) inside meteorites that had come from outer space.

Question

Quizplus · Accepted Answer

Helium was first discovered in the Sun's atmosphere as an unknown yellow spectral line signature during a solar eclipse in 1868 by Jules Janssen and Norman Lockyer. They named it after the Greek sun god Helios. It was only later found on Earth.

The Element Helium Was First Discovered and Identified as a Separate