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# What is the correct order of occurrence (% by weight) in air of Ne, Ar and Kr?

$\begin {array} {1 1} (a)\;Ne > Ar > Kr & \quad (b)\;Ar > Ne > Kr \\ (c)\;Ar > Kr > Ne & \quad (d)\;Ne > Kr > Ar \end {array}$

$(b)\;Ar &gt; Ne &gt; Kr$

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