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The heaviest known noble gas metal is radon, atomic number 86. part a find the atomic numbers of the as yet undiscovered next two members of the series.
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The heaviest known noble gas metal is radon, atomic number 86. part a find the atomic numbers of the as yet undiscovered next two members of the series.

User Mudassir Ali
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Yuri Oganessian has already discovered the next noble gas at atomic weight 118, (which is 86 plus 32). The next most likely, if ever encountered, should be 150 (which is 118 plus 32) or at 168 (which is 118 plus 32 plus 16).
User Julesezaar
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