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The lightest elements are helium and hydrogen. the heaviest is osmium followed by Iridium
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The lightest elements are helium and hydrogen. the heaviest is osmium followed by Iridium
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S
The lightest elements are helium and hydrogen. the heaviest is osmium followed by Iridium
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S
The lightest elements are helium and hydrogen. the heaviest is osmium followed by Iridium
