Multiple Choice
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, in the spectrum emitted from its upper atmosphere.
D) inside meteorites that had come from outer space.
Correct Answer:
Verified
Correct Answer:
Verified
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