Talk:Promethium

Promethium 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
February 27, 2012	Good article nominee	Listed

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Untitled

Article changed over to new Wikipedia:WikiProject Elements format by schnee. Elementbox converted 11:09, 10 July 2005 by Femto (previous revision was that of 13:31, 9 July 2005). 9 July 2005

Image

This article states the appearance but does not have a picture of the element. This is peculiar. — Preceding unsigned comment added by 220.245.49.25 (talk) 05:15, 24 April 2014 (UTC)[reply]

Yes, we're aware of this problem, and we've been looking for a reliable one for years. (Hence the banner at the top of this talk page with the camera in it, requesting a photograph.) Unfortunately, nobody seems to have actually photographed something that is incontrovertibly a pure promethium sample, and therefore there is no image of pure Pm metal on this article. (We do have one for promethium(III) oxide, though.) Double sharp (talk) 12:44, 24 April 2014 (UTC)[reply]

There is one now though 129.126.39.226 (talk) 07:03, 11 September 2024 (UTC)[reply]

I found a few pictures (they may be fake) of promethium. They all occur on more than one webpage, all stating that they are promethium. Do you think they are reliable: http://www.twnree.com/wp-content/uploads/2012/02/61-Promethium.jpg http://businesslife.ba.com/Media/images/rareh-Business-Life-Promethium-credit-periodictable.com-043410ea-8348-4a28-b7cd-aa244d51c5ee-0-450x521.jpg --220.245.49.25 (talk) 23:19, 22 January 2015 (UTC)[reply]

No. [1] is Nd by T.W. Gray [2], and [3] is a colored/decolorized illustration from [4]. Materialscientist (talk) 23:24, 22 January 2015 (UTC)[reply]

I found these images from Chinese websites. I don't know how reliable they is: http://mmbiz.qpic.cn/mmbiz/07vbMHVhyHe9Xa8NzB5iaibFeicn3IPxOmdLljo4hezeQcViaJfa1o8RM9MO2LgwnWnTRYlAs93Ccmk3o0FFOicmXGQ/0 http://a2.att.hudong.com/44/03/01300001385827133437036291016_s.jpg 220.245.49.25 (talk) 08:43, 12 June 2015 (UTC)[reply]

The first one is a Nd-Fe-B magnet according to the caption. The second is the picture of Nd used in Ralph Lapp's book Matter with a recoloured background. Double sharp (talk) 19:33, 12 June 2015 (UTC)[reply]

I found the first image from this website, where all images have the same watermark: http://mp.weixin.qq.com/mp/appmsg/show?__biz=MzA5MTMyODAzOA==&appmsgid=200025081&itemidx=1&sign=18d5b6ffdee5643be61983d6d9170022&3rd=MzA3MDU4NTYzMw==&scene=6#wechat_redirect — LL221W (talk) 11:15, 13 June 2015 (UTC)[reply]

Yes, but for such a rare element, I'd expect a long explanation of how the sample was made, which I don't see there. (And I'd expect larger safety precautions, as Pm stored out in the open in such large quantities is going to cause heavy radioactive contamination.) And given that most pictures of Pm online happen to be actually Nd, I'm really not convinced by this picture, and probably won't be until it can be proven to be unquestionably Pm. Double sharp (talk) 10:40, 15 June 2015 (UTC)[reply]

Hello, Promethium. You have new messages at Double sharp's talk page.
You can remove this notice at any time by removing the {{Talkback}} or {{Tb}} template.

I found a image is about promethium sample, but I'm not sure that it's real. The image was made by T. W. Gray, too. But when I uploaded this image to Chinese Wikipedia...yes it will be deleted. It's on the Files for discussion now, see zh:Wikipedia:檔案存廢討論/記錄/2022/02/10#File:Promethium_sample.jpg for more information. Oh guys, I've forgotten to tell you the source of this image is https://periodictable.com/Items/061.2/index.html . --ERS ROHU (talk) 12:00, 10 February 2022 (UTC)[reply]

The infobox image is quite fuzzy 2603:8080:D03:89D4:C18D:20C4:C242:7644 (talk) 01:07, 2 October 2024 (UTC)[reply]

article contradicts itself re: Pm147 emitting gamma radiation

the first paragraph of Applications says that Pm147 can not emit gamma radiation, and the first paragraph of Precautions says that it can. i'm not sure which is correct, hopefully someone else can revise. WordsAndNumbers (talk) 05:30, 15 October 2021 (UTC)[reply]

particle energies needed

I didn't find any mention of the emitted alpha, beta, etc energies of the various isotopes in the infoboxes. If there is a rare gamma ray possible from PM-147, then there should be a reference as to what its energy should be.71.230.16.111 (talk) 05:15, 25 January 2025 (UTC)[reply]

For every decay of ¹⁴⁷Pm, there is a 0.00285% chance of emitting a 121.64 keV gamma ray. (doi:10.1016/j.apradiso.2018.10.025) Nucleus hydro elemon (talk) 15:05, 25 January 2025 (UTC)[reply]