A. Argon
B. Xenon
C. Neon
D. Helium
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A. Argon
B. Xenon
C. Neon
D. Helium
Answer: D. Helium The noble gas which was discovered first in the sun and then on the earth is helium.
Answer: D. Helium
The noble gas which was discovered first in the sun and then on the earth is helium.
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