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The correct order of availability of noble gases in atmosphere in % by volume

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$A r > N e > H e > K r > X e$

$H e < N e < A r < K r < X e$

$N e > A r > H e > X e > K r$

$H e > N e > A r > K r > X e$

answer is A.

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Detailed Solution

Argon (Ar): 0.934%
Neon (Ne): 0.0018%
Helium (He): 0.00052%
Krypton (Kr): 0.0001%
Xenon (Xe): 0.000009%

Correct order of availability in atmosphere (% by volume):
Ar > Ne > He > Kr > Xe

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