A. Helium
B. Neon
C. Krypton
D. Xenon
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A. Helium
B. Neon
C. Krypton
D. Xenon
Answer: A. Helium A rare gas that was detected in the sun before it was discovered on earth is helium.
Answer: A. Helium
A rare gas that was detected in the sun before it was discovered on earth is helium.
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