Talk:Roentgenium

This is the talk page for discussing improvements to the Roentgenium article.
This is not a forum for general discussion of the article's subject.

Put new text under old text. Click here to start a new topic.
New to Wikipedia? Welcome! Learn to edit; get help.

Article policies

Find sources: Google (books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL

Archives: 1: 90 days

Roentgenium has been listed as one of the Natural sciences good articles under the good article criteria. If you can improve it further, please do so. If it no longer meets these criteria, you can reassess it.

Article milestones
Date	Process	Result
October 22, 2012	Good article nominee	Listed

Archives

Archive 1

This page has archives. Sections older than 90 days may be automatically archived by when more than 4 sections are present.

Electronegativity[edit]

What is predicted electronegativity for this element? Higher than 2,55 (electronegativity of C nad Se)? What with melting and boiling point? If it has very high electronegtivity, its compounds (especilly with hydrogen and alkali metls) wold have been very interesting. 178.42.151.221 (talk) 09:08, 20 October 2013 (UTC)[reply]

I don't think Rg will have that high an electronegativity. The 6d subshell is relativistically destabilized and it is not too hard to to breach it: even iodine is expected to be able to oxidize copernicium to the +4 state (with an open 6d⁸ configuration), showing that a full 6d¹⁰ shell would not be all that stable. While I wouldn't say that roentgenides aren't possible, I think the +3 and +5 states would be more stable, and that Rg(V) should be quite stable and common. So I would estimate Rg's electronegativity as only about 1.85: able to form anions, but unwilling to (and probably unstable in the −1 state), and quite oxidizable.

As Rg is expected to crystallize in bcc rather than fcc, I would expect a higher melting point, maybe around 1700 K. As for the boiling point, I would likewise expect a high value of 4100 K due to high atomic weight (281 amu) and density (28.7 g/cm³). Double sharp (talk) 10:08, 20 October 2013 (UTC)[reply]

Errata: changed erroneous "°C" to "K" in my post immediately above, and changed Rg's boiling point. Double sharp (talk) 10:52, 21 October 2013 (UTC)[reply]

Calculated electron affinity is ~1.6 eV, per Fricke. This lies between the values for Au (which forms anions) and Cu and Ag (which do not). Double sharp (talk) 10:38, 8 November 2016 (UTC)[reply]

An electronegativity scale for all elements by A. V. Kul'sha and T. A. Kolevich may be found at User:Double sharp/Electronegativity, in which Rg is assigned 1.99, just below boron at 2.00. (The scale ranges from Cs at 0.70 to Ne at 4.50; the period 2 elements are given values at intervals of 0.50 from Li at 1.00 to Ne at 4.50.) Double sharp (talk) 06:01, 11 February 2019 (UTC)[reply]

"Roentogenium" listed at Redirects for discussion[edit]

An editor has asked for a discussion to address the redirect Roentogenium. Please participate in the redirect discussion if you wish to do so. Steel1943 (talk) 19:55, 20 September 2019 (UTC)[reply]

"Rogentium" listed at Redirects for discussion[edit]

An editor has asked for a discussion to address the redirect Rogentium. Please participate in the redirect discussion if you wish to do so. Steel1943 (talk) 19:55, 20 September 2019 (UTC)[reply]

"Uninunium" listed at Redirects for discussion[edit]

An editor has asked for a discussion to address the redirect Uninunium. Please participate in the redirect discussion if you wish to do so. Steel1943 (talk) 19:55, 20 September 2019 (UTC)[reply]