| 1. | That gives it a total atomic weight of slightly more than 238.
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| 2. | Chemically pure elements could be mixtures of isotopes with differing atomic weights.
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| 3. | He is notable for his work on atomic weights of the elements.
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| 4. | Element 110 has an atomic weight of 269-- the heaviest ever produced.
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| 5. | Incidentally, the 1925 Atomic Weights report was signed by three Nobel laureates.
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| 6. | Atom for atom it's only a middleweight, number 76, atomic weight 190.
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| 7. | It was becoming clear that atomic weights are not constants of nature.
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| 8. | It sorts isotopes by their atomic weights with an accelerator mass spectrometer.
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| 9. | Moissan was one of the original members of the International Atomic Weights Committee.
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| 10. | Atomic Number : 105 Atomic Weight : [ 268 ] Melting Point :?
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