Talk:Oganesson

Oganesson is a featured article; it (or a previous version of it) has been identified as one of the best articles produced by the Wikipedia community. Even so, if you can update or improve it, please do so.

Article milestones
Date	Process	Result
February 27, 2007	Good article nominee	Not listed
April 7, 2007	Good article nominee	Not listed
December 10, 2007	Good article nominee	Listed
December 13, 2007	Peer review	Reviewed
January 21, 2008	Featured article candidate	Promoted
A fact from this article appeared on Wikipedia's Main Page in the "Did you know?" column on October 15, 2006.
Current status: Featured article

Template:Chemical Element

Archives

Archive until January 2008 (when it became a FA)

Standard Atomic Weight

I've noticed some confusion about the required entry in the standard atomic weight box for many elements. For wholly synthetic radioactive elements, the term is used to describe the mass number for the isotope with the longest known half life. For ununoctium, this is 294 by definition. Many people have used predictions calculated on Apsidium. However, there are serious problems with this: a) it's not real science b) the value provided is a 'significant mass atom' value, which isn't an official term c) the mass number of the most stable isotope for a superheavy element is almost entirely determined by shell effects and in particular the height of the fission barrier. The calculations of this require real maths! In summary, if you want wikipedia to be accurate, do not reference apsidium! Drjezza (talk) 12:43, 9 January 2008 (UTC)[reply]

I agree; similarly, all the "predicted" melting and boiling points and such should be removed unless they refer to a real source such as a journal article and not a website which got them out of who-knows-where. --Itub (talk) 13:18, 9 January 2008 (UTC)[reply]

the critical points are debatable. It will be extremely expensive to find it experimentally and theoretically, several different points are predicted. For example one reference above says that the element might be solid at normal conditions. Nergaal (talk) 17:21, 9 January 2008 (UTC)[reply]