| 11. | The atomic masses of the elements you can easily look up.
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| 12. | The atomic number of an atom is usually about half its atomic mass.
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| 13. | The tag is approximately 1202 Daltons in atomic mass and has 10 amino acids.
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| 14. | The value of this number is called the atomic mass.
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| 15. | Bismuth was long considered the element with the highest atomic mass that is stable.
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| 16. | Twenty-nine radioisotopes have also been synthesized, ranging in atomic mass from 138 to 173.
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| 17. | For atomic mass spectrometry, a sample must also be ionized.
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| 18. | :Most periodic tables list an atomic mass for each element.
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| 19. | Before the discovery of isotopes, empirically determined noninteger values of atomic mass confounded scientists.
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| 20. | Oganesson has the highest atomic number and highest atomic mass of all known elements.
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