Talk:Isotopes of radon

chemical and "normal" physical properties

shouldn't there also be a section in which the "regular" physical and chemical properties are outlined (boiling point, melting point etc. etc) 194.53.253.51 (talk) 09:06, 9 November 2009 (UTC)[reply]

Yes, and comes the question that, since radon is an inert gas, how do you know that there is any of it except for its radioactivity? And the second question, is there a procedure that permits us to say categorically that there are no stable isotopes of 86Rn Radon?WFPM (talk) 13:09, 8 May 2011 (UTC)[reply]

The main properties are at radon, though this is very late. You would be able to tell the presence of an inert gas in the same way as one would for He, Ne, and Ar; besides Rn would not be all that inert. And if there were stable isotopes of Rn, it would be quite extraordinary that stars had not synthesised them; the location of the beta-stability line cuts right through the known isotopes, which are not stable at all. The only possibility would be nuclear isomers like ^180mTa, which is also really quite unlikely. Double sharp (talk) 01:11, 11 May 2017 (UTC)[reply]

Representative Isotopic Composition / Mole Fraction

²²²Rn is listed as "trace" in the table.

Shouldn't it be listed as > 99% (or > 0.99)? I.E. it may occur as trace quantities in nature, but most of what is found is ²²²Rn. Sorry, I don't have the specific percentage. Keelec (talk) 17:49, 5 May 2013 (UTC)[reply]

Because none of the Rn isotopes occur in anything more than traces, and those are dependent on which parent isotopes exactly happen to be there. If you have a sample with lots of thorium but almost no uranium, you will have more thoron (²²⁰Rn) than radon (²²²Rn). Now thoron has a low half-life (almost a minute) and so the problem is exacerbated as it has not enough time to diffuse uniformly like radon can; by the time it gets to the far corners of the room (speaking imprecisely of course), you will not have thoron, but rather its daughters. So the relative abundances fluctuate wildly depending on where exactly you are measuring them. Double sharp (talk) 15:42, 14 April 2017 (UTC)[reply]

External links modified

Hello fellow Wikipedians,

I have just modified 2 external links on Isotopes of radon. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 5 June 2024).

If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—InternetArchiveBot (Report bug) 14:19, 15 April 2017 (UTC)[reply]

Unstable nuclide with N/Z = 1.5

²¹⁵Rn (half-life = 2.3 µs) is the second least stable known nuclide with N:Z = 3:2, being second only to ⁵He. The next least stable is ²⁷⁵Ds (half-life = 62 µs).

Are alpha decays of ²²³Rn and ²²⁴Rn predicted?

Considering the short alpha half-life of ²²²Rn, I would be very astonished if they are not. 129.104.241.214 (talk) 02:56, 30 November 2023 (UTC)[reply]

The partial alpha half-life of ²²³Rn is 3.65×10⁸ seconds (11.5 years, doi 10.1103/PhysRevC.95.014319). Nucleus hydro elemon (talk) 07:58, 1 December 2023 (UTC)[reply]

Thanks! As a reminder for the future in case that I forget it, this is only a calculated value. 129.104.241.214 (talk) 04:09, 3 December 2023 (UTC)[reply]

It is a pity that the isotopes of At, Rn, Fr near beta-stability line are so alpha unstable

Due to the extremely short alpha half-lives of nuclides in this region, beta decays have been so poorly studied for ^{212(m),213,214(m),216(m)}At, ^{213,215,219,222}Rn and ^{214(m),216(m),218(m)}Fr. 2A04:CEC0:1088:EB77:D831:1EEE:AC25:2D1D (talk) 00:38, 14 May 2024 (UTC)[reply]

I just realized that ²¹²Rn and ²²⁰Rn have very close alpha decay energy, but their half-lives differ a lot

²¹²Rn has Q_α = 6385.1 keV, and ²²⁰Rn has Q_α = 6404.66 keV, so these two values are very close. But ²¹²Rn is 25 times more stable than ²²⁰Rn. 129.104.241.181 (talk) 13:00, 28 November 2024 (UTC)[reply]