The most abundant noble gas in the atmosphere is :
He
Ne
Kr
Ar
A
Ne
B
Ar
C
Kr
D
He
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Solution
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Argon: Argon's elemental symbol is Ar, and it is the most abundant noble gas in the atmosphere. There's so much Ar in the atmosphere because most of it was produced by a long-lived radioactive isotope of potassium in the earth's crust and released over geologic time.
Hence option C is correct answer.
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