| 21. | His major work, however, was that on the atomic weights of the elements.
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| 22. | Atomic Number : 111 Atomic Weight : [ 281 ] Melting Point :?
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| 23. | Atomic Number : 109 Atomic Weight : [ 278 ] Melting Point :?
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| 24. | Lead has a higher atomic weight than gold, but is far more common.
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| 25. | In the context of particle, thus greatly reducing its atomic weight.
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| 26. | Atomic Number : 108 Atomic Weight : [ 269 ] Melting Point :?
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| 27. | This procedure enabled chemists to determine the new element's atomic weight.
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| 28. | Magnesium, atomic weight 24.312, was lighter by a third than aluminum.
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| 29. | In fact there are few molecules with atomic weight of 10.
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| 30. | Magnesium, atomic weight 24 . 312, was lighter by a third than aluminum.
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