Talk:Europium

Elements B‑class Mid‑importance

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Article changed over to new Wikipedia:WikiProject Elements format by schnee. Elementbox converted 11:19, 10 July 2005 by Femto (previous revision was that of 13:44, 9 July 2005).

Information Sources

Some of the text in this entry was rewritten from Los Alamos National Laboratory - Europium. Data for the table was obtained from the sources listed on the subject page and Wikipedia:WikiProject Elements but was reformatted and converted into SI units.

Talk

Source needed

"A salt of Europium is a component of the newer phosphorescent powders and paints, some of which will glow for days after a few minutes of exposure to light." I don't think this is possible (allthough it may be). I have commented it out in article page (< !-- -->). Please find some relevant source. --Borislav Dopudja 16:09, 14 September 2006 (UTC)[reply]

How is Europium used in screening for Down's Syndrome?--Syd Henderson 17:54, 1 October 2006 (UTC)[reply]

In a very generic way: by tagging, with europium, the antibodies for a relevant protein; reacting the antibodies with a serum sample; and then testing for presence of europium. Fortunately, the concentration of various proteins at specific times in pregnancy give a statistical signal for Down's syndrome. See (PDF): [1]. At any rate, it's very misleading to give such attention to Down's syndrome and this whole sentence is clumsy. Also United Nuclear appears to proudly sell a new line of Europium glow powder/paint with a shine-time of 12 hours: [2]--Tteravai (talk) 03:38, 27 August 2008 (UTC)[reply]

Vague Phraseology

What is meant by the comment: "...deliveries of the metal element in solid form..." in the Characteristics section? I'm certain that the author can come up with a better way of phrasing this. R N Talley (talk) 19:06, 23 December 2008 (UTC)[reply]

I've changed "deliveries" to "samples". --Itub (talk) 20:22, 23 December 2008 (UTC)[reply]

Water is a liquid

H₂O (g) is probably a typo.

While it is possible that H₂O (aq) (i.e. water vapor in a solution of water) may be what actually reacts in the 2 Eu + 6 H₂O, I suspect that 2 Eu (s) + 6 H₂O (l) → ... would suffice.