Talk:List of elements by atomic mass
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Added reference, all data verified (with exception of the square-bracketed mass numbers). Changed to wikitable, checked links and spelling. There have been minor changes of footnotes (selenium +r, potassium -g, clorine +gr). Removed namescheme footnote irrelevant to this article. Left out elements >=112. Femto 18:39, 5 Mar 2005 (UTC)
Ambiguity:
As far as I can see the list is sorted by atomic number, not mass: Ar (#18, a.m. 39.9) precedes K (#19, a.m. 39.1)
- An excellent point. Fixed. --Spangineer[es] (háblame) 13:07, 16 June 2006 (UTC)
[edit] Terrestrial
I would expect that every naturally-available elements would report a number based on "terrestrial material" (which is the result of the distribution of the isotopes in the Earth's crust/atomostphere) and that "note 4" would apply to all such numbers. Can we acknowledge this in the lead paragraph? Is "note 4" more specialized than my understanding of it? -- 199.33.32.40 22:49, 27 January 2007 (UTC)
[edit] This article is incorrectly titled
It should be "List of elements by relative atomic mass" or even better "List of elements by standard atomic weights" since atomic mass is the mass of an atom at rest and relative atomic mass is the average mass of an element in a particular environment and the standard atomic weights are the commonly accepted relative atomic masses as found in the commonly laboratory or earth environment as determined by an IUPAC committee and used on most periodic tables. --Nick Y. 18:02, 23 March 2007 (UTC)
- Well, atomic mass is basically Molar mass, which is relative in its nature. Therefore, I think titling the page as "List of elements by relative atomic mass" would be redundant. At most, there should be a brief explanation at the beginning of the article, but even that is probably not necessary. -- Kevin (TALK)(MUSIC) 19:18, 23 March 2007 (UTC)
- I think you missed my point. Relative atomic mass is basically the molar mass (with different units) whereas atomic mass is the mass of an atom at rest. In other words atomic mass is the mass of a single atom and therefore a nuclide. Read atomic mass and the references therein. The definitions are very clear. There is also a nice historical article about the shift from atomic weight to relative atomic mass.--Nick Y. 20:12, 30 March 2007 (UTC)
- By the way atomic weight would work too, just not atomic mass. Even more appropriately would be standard atomic weight since that is exactly what is listed, including the uncertainties given by the IUPAC committee.--Nick Y. 20:21, 30 March 2007 (UTC)
- I think you missed my point. Relative atomic mass is basically the molar mass (with different units) whereas atomic mass is the mass of an atom at rest. In other words atomic mass is the mass of a single atom and therefore a nuclide. Read atomic mass and the references therein. The definitions are very clear. There is also a nice historical article about the shift from atomic weight to relative atomic mass.--Nick Y. 20:12, 30 March 2007 (UTC)
