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Arrange the noble gases in order of increasing Atomic Mass.

$\begin{array}{1 1} Rn > Xe > Kr > Ar > Ne > He \\ Xe > Kr > Ar > Rn > He > Ne \\He > Ne > Ar > Kr > Xe > Rn \\ Ne > Ar < He > Xe > Rn > Kr \end{array}$
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Answer: Rn > Xe > Kr > Ar > Ne > He
The atomic mass of Noble gases increases down the group in the periodic table.
answered Jul 28, 2014 by balaji.thirumalai
 

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