This article is supported by WikiProject Elements, which gives a central approach to the
chemical elements and their
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This article has been rated as Mid-importance on the
importance scale.
A fact from Holmium appeared on Wikipedia's
Main Page in the Did you know column on 25 August 2023 (
check views). The text of the entry was as follows:
Did you know... that holmium has the highest
magnetic moment of any naturally occurring element?
This page has archives. Sections older than 730 days may be automatically archived by Lowercase sigmabot III when more than 3 sections are present.
Information Sources
Some of the text in this entry was rewritten from
Los Alamos National Laboratory - Holmium. Additional text was taken directly from the Elements database 20001107 (via
dict.org) and from WordNet (r) 1.7 (via
dict.org). 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.
Magnetic Properties
In the introduction it states that Holmium has the highest magnetic permeability of any element and is there element and therefore is used for the polepieces of the strongest static magnets. It should say highest magnetic saturation moment. It is the moment rather than the permeability that is reason it is used in pole pieces for "strong" synthetic magnets.
In the section Application Also magnetic strengthis a poorly defined quantity, it would be better to use magnetic moment or magnetic saturation moment
Y-90 alternative
Ho-166 is an alternative to Y-90 in injected microspheres based beta-radiation therapy (SIRT / TARE) for inoperable liver cancer patients. Ho-166 is produced commercially by Terumo (formerly Quirem) in Belgium. Because of its short half-life (28.6 hours) causing difficulties with long-distance transportation, it is only used in Europe but not USA, which uses Y-90 sourced from Canada instead.
94.21.160.64 (
talk)
21:28, 2 May 2023 (UTC)reply
The following discussion is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.
Hey Amitchell, I've recently been feeling unwell. You are welcome to place comments on the review, but there might be a long delay before I respond to them. 141Pr {
contribs}18:51, 18 July 2023 (UTC)reply
Happy to review the article. AM
Review comments
Initial comments on the references
(see
MOS:REFERENCES for information regarding these comments)
The following is based on
this version of the article.
The citation method chosen for this article needs to be more consistently applied:
There is a Bibliography section, but this only lists two books. Refs 6, 9. 10, 11, 21, 25, 26, 28, 29, 30, and 35 are also books, and so for consistency should also be listed in the bibliography. Ref 56 is unnecessarily listed in both sections.
I have added those books to the bibliography. Is that what you mean? Also, can you explain to me what Ref 56 is unnecessarily listed in both sections means? 141Pr {
contribs}08:00, 7 August 2023 (UTC)reply
The Ref 56 (Emsley) issue is now sorted. However you still have a mixture of different citation styles, e.g., Ref 16 (Emsley, John (2011). Nature's Building Blocks. p. 226.) is a short quote, and Ref 8 (Cullity, B. D.; Graham, C. D. (2011). Introduction to Magnetic Materials. John Wiley & Sons. ISBN 978-1-118-21149-6) is a full citation, but without a page number.
Amitchell125 (
talk)
13:27, 7 August 2023 (UTC)reply
They are different editions of the same book—information in 2011 (p.225) lines up with the text in 2001 (p.181). Both books can be viewed in full online
here, you should I think only select one of them.
Amitchell125 (
talk)
19:01, 4 August 2023 (UTC)reply
Ref 40 appears to have an incorrect title. The ref should be written as <ref>{{Cite web |title=Ho - Holmium |url=https://mmta.co.uk/metals/ho/ |access-date=5 December 2022 |publisher=MMTA |language=}}</ref>
The Refs 9, 15, 16 require page numbers for me to verify the text. As I am working through the article section by section, I cannot easily continue until these page numbers are provided. Can you address this issue please?
Amitchell125 (
talk)
13:56, 28 July 2023 (UTC)reply
Lead section / infobox
Link malleable (
Ductility, here and in the following section); oxide; Earth's crust; spectroscopically (
Spectroscopy); ions; fluorescent (
Fluorescence);emission light lines (
Emission spectrum); laser; neutron; nuclear reactor.
Something like 'Holmium was discovered through isolation by Swedish chemist Per Theodor Cleve. It was also independently by Jacques-Louis Soret and Marc Delafontaine, who together observed it spectroscopically in 1878'. AM
Eleventh – (not GA) consider amending to ‘’11th’ (see
MOS:NUMERAL), and amending other numbers greater that nine to a numerical form in a similar way, for the sake of consistency within the article.
Something Holmium is quite electropositive and is generally trivalent with something like 'On a
electronegativity scale going from 0.7 (for the highly electropositive
francium) to 2.98 (for the most electronegative element,
fluorine), holmium is electropositive with a value of 1.23.[1]'
Main article – because there is information in this subsection that isn’t included in
Isotopes of holmium, I think the hatnote should be ‘Further information’ (using {{further|PAGE1}}).
Suggest: 166m1Ho has a half-life of around 1200 years. (
cite using this, which also lists interesting medical applications for 166Ho in the Abstract at the top of the article) The high excitation energy, resulting in a particularly rich spectrum of decay
gamma rays produced when the metastable state de-excites, makes this isotope useful as a means for
calibratinggamma ray spectrometers. (
cite using this; also Emsley (2011), p. 226)
Thanks for the work on this. To avoid me getting confused, please add Done to show what you have addressed, and Ill cross out the text once I have checked it has been sorted, or a small red cross (N) if there's still an outstanding issue. Regards,
Amitchell125 (
talk)
19:00, 28 July 2023 (UTC)reply
Not yet done, for instance, Soret and Delafontaine should be introduced as 'the Swiss chemists Jacques-Louis Soret and Marc Delafontaine'. Apologies for not being clearer.
Amitchell125 (
talk)
16:37, 31 July 2023 (UTC)reply
and was the first to isolate it – I would replace it with 'the new element' (or something similar), and consider splitting it off from the rest of the sentence, to improve the prose.
The four paragraphs of this section do not need to be given individual subsections. They would be better put together in a single 4-paragraph section. Also, if the paragraphs are swapped, the image can then be repositioned so it sits opposite the text without jutting out of the section.
Lanthanide should be removed from this list, as it appears in the article’s body (
MOS:NOTSEEAGAIN). Ditto Rare earth metals (see comment in Occurrence section).
See the initial comments of this review for the issues on references. Spot checking will be completed when these (specifically the ones on pages numbers, general links, and dead links) are sorted.
(Earwig (
here) has come up with text that seems to be copied from the sources in the article, but these websites were copied from Wikipedia.)
It seems like I have addressed all of the comments except the ones about referencing and bibliography. I'm not sure, but I might need some help accessing some of the refs. 141Pr {
contribs}18:24, 4 August 2023 (UTC)reply
Ref 16 17 (Hammond); Not done Holmium is described in the 85th edition on p.4-15 and elsewhere in the tables (
here), but finding the right pages to cite might be trickier.
Amitchell125 (
talk)
15:56, 9 August 2023 (UTC)reply
The discussion above is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.
The following is an archived discussion of the DYK nomination of the article below. Please do not modify this page. Subsequent comments should be made on the appropriate discussion page (such as
this nomination's talk page,
the article's talk page or
Wikipedia talk:Did you know), unless there is consensus to re-open the discussion at this page. No further edits should be made to this page.
article looks good, was recently improved to GA status, is long enough and is within policy. The hook looks good, is short enough and interesting.
Praseodymium-141, you should consider using
File:Holmium2.jpg in the nomination, as I think it is pretty eye-catching. It appears this is the user's fifth nomination, so no QPQ needed. Note the source is offline, AGF. However the fact also appears widely cited in other online sources. « Gonzo fan2007(talk) @ 16:34, 11 August 2023 (UTC)reply
Is the boiling point known to the nearest degree? The numbers in the article snd the box both look like false precision based on the nearest hundred or thousand (3000 K / 2600 Celsius).
46.188.244.112 (
talk)
03:05, 25 August 2023 (UTC)reply
This article is supported by WikiProject Elements, which gives a central approach to the
chemical elements and their
isotopes on Wikipedia. Please participate by editing this article, or visit the
project page for more details.ElementsWikipedia:WikiProject ElementsTemplate:WikiProject Elementschemical elements articles
This article has been rated as Mid-importance on the
importance scale.
A fact from Holmium appeared on Wikipedia's
Main Page in the Did you know column on 25 August 2023 (
check views). The text of the entry was as follows:
Did you know... that holmium has the highest
magnetic moment of any naturally occurring element?
This page has archives. Sections older than 730 days may be automatically archived by Lowercase sigmabot III when more than 3 sections are present.
Information Sources
Some of the text in this entry was rewritten from
Los Alamos National Laboratory - Holmium. Additional text was taken directly from the Elements database 20001107 (via
dict.org) and from WordNet (r) 1.7 (via
dict.org). 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.
Magnetic Properties
In the introduction it states that Holmium has the highest magnetic permeability of any element and is there element and therefore is used for the polepieces of the strongest static magnets. It should say highest magnetic saturation moment. It is the moment rather than the permeability that is reason it is used in pole pieces for "strong" synthetic magnets.
In the section Application Also magnetic strengthis a poorly defined quantity, it would be better to use magnetic moment or magnetic saturation moment
Y-90 alternative
Ho-166 is an alternative to Y-90 in injected microspheres based beta-radiation therapy (SIRT / TARE) for inoperable liver cancer patients. Ho-166 is produced commercially by Terumo (formerly Quirem) in Belgium. Because of its short half-life (28.6 hours) causing difficulties with long-distance transportation, it is only used in Europe but not USA, which uses Y-90 sourced from Canada instead.
94.21.160.64 (
talk)
21:28, 2 May 2023 (UTC)reply
The following discussion is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.
Hey Amitchell, I've recently been feeling unwell. You are welcome to place comments on the review, but there might be a long delay before I respond to them. 141Pr {
contribs}18:51, 18 July 2023 (UTC)reply
Happy to review the article. AM
Review comments
Initial comments on the references
(see
MOS:REFERENCES for information regarding these comments)
The following is based on
this version of the article.
The citation method chosen for this article needs to be more consistently applied:
There is a Bibliography section, but this only lists two books. Refs 6, 9. 10, 11, 21, 25, 26, 28, 29, 30, and 35 are also books, and so for consistency should also be listed in the bibliography. Ref 56 is unnecessarily listed in both sections.
I have added those books to the bibliography. Is that what you mean? Also, can you explain to me what Ref 56 is unnecessarily listed in both sections means? 141Pr {
contribs}08:00, 7 August 2023 (UTC)reply
The Ref 56 (Emsley) issue is now sorted. However you still have a mixture of different citation styles, e.g., Ref 16 (Emsley, John (2011). Nature's Building Blocks. p. 226.) is a short quote, and Ref 8 (Cullity, B. D.; Graham, C. D. (2011). Introduction to Magnetic Materials. John Wiley & Sons. ISBN 978-1-118-21149-6) is a full citation, but without a page number.
Amitchell125 (
talk)
13:27, 7 August 2023 (UTC)reply
They are different editions of the same book—information in 2011 (p.225) lines up with the text in 2001 (p.181). Both books can be viewed in full online
here, you should I think only select one of them.
Amitchell125 (
talk)
19:01, 4 August 2023 (UTC)reply
Ref 40 appears to have an incorrect title. The ref should be written as <ref>{{Cite web |title=Ho - Holmium |url=https://mmta.co.uk/metals/ho/ |access-date=5 December 2022 |publisher=MMTA |language=}}</ref>
The Refs 9, 15, 16 require page numbers for me to verify the text. As I am working through the article section by section, I cannot easily continue until these page numbers are provided. Can you address this issue please?
Amitchell125 (
talk)
13:56, 28 July 2023 (UTC)reply
Lead section / infobox
Link malleable (
Ductility, here and in the following section); oxide; Earth's crust; spectroscopically (
Spectroscopy); ions; fluorescent (
Fluorescence);emission light lines (
Emission spectrum); laser; neutron; nuclear reactor.
Something like 'Holmium was discovered through isolation by Swedish chemist Per Theodor Cleve. It was also independently by Jacques-Louis Soret and Marc Delafontaine, who together observed it spectroscopically in 1878'. AM
Eleventh – (not GA) consider amending to ‘’11th’ (see
MOS:NUMERAL), and amending other numbers greater that nine to a numerical form in a similar way, for the sake of consistency within the article.
Something Holmium is quite electropositive and is generally trivalent with something like 'On a
electronegativity scale going from 0.7 (for the highly electropositive
francium) to 2.98 (for the most electronegative element,
fluorine), holmium is electropositive with a value of 1.23.[1]'
Main article – because there is information in this subsection that isn’t included in
Isotopes of holmium, I think the hatnote should be ‘Further information’ (using {{further|PAGE1}}).
Suggest: 166m1Ho has a half-life of around 1200 years. (
cite using this, which also lists interesting medical applications for 166Ho in the Abstract at the top of the article) The high excitation energy, resulting in a particularly rich spectrum of decay
gamma rays produced when the metastable state de-excites, makes this isotope useful as a means for
calibratinggamma ray spectrometers. (
cite using this; also Emsley (2011), p. 226)
Thanks for the work on this. To avoid me getting confused, please add Done to show what you have addressed, and Ill cross out the text once I have checked it has been sorted, or a small red cross (N) if there's still an outstanding issue. Regards,
Amitchell125 (
talk)
19:00, 28 July 2023 (UTC)reply
Not yet done, for instance, Soret and Delafontaine should be introduced as 'the Swiss chemists Jacques-Louis Soret and Marc Delafontaine'. Apologies for not being clearer.
Amitchell125 (
talk)
16:37, 31 July 2023 (UTC)reply
and was the first to isolate it – I would replace it with 'the new element' (or something similar), and consider splitting it off from the rest of the sentence, to improve the prose.
The four paragraphs of this section do not need to be given individual subsections. They would be better put together in a single 4-paragraph section. Also, if the paragraphs are swapped, the image can then be repositioned so it sits opposite the text without jutting out of the section.
Lanthanide should be removed from this list, as it appears in the article’s body (
MOS:NOTSEEAGAIN). Ditto Rare earth metals (see comment in Occurrence section).
See the initial comments of this review for the issues on references. Spot checking will be completed when these (specifically the ones on pages numbers, general links, and dead links) are sorted.
(Earwig (
here) has come up with text that seems to be copied from the sources in the article, but these websites were copied from Wikipedia.)
It seems like I have addressed all of the comments except the ones about referencing and bibliography. I'm not sure, but I might need some help accessing some of the refs. 141Pr {
contribs}18:24, 4 August 2023 (UTC)reply
Ref 16 17 (Hammond); Not done Holmium is described in the 85th edition on p.4-15 and elsewhere in the tables (
here), but finding the right pages to cite might be trickier.
Amitchell125 (
talk)
15:56, 9 August 2023 (UTC)reply
The discussion above is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.
The following is an archived discussion of the DYK nomination of the article below. Please do not modify this page. Subsequent comments should be made on the appropriate discussion page (such as
this nomination's talk page,
the article's talk page or
Wikipedia talk:Did you know), unless there is consensus to re-open the discussion at this page. No further edits should be made to this page.
article looks good, was recently improved to GA status, is long enough and is within policy. The hook looks good, is short enough and interesting.
Praseodymium-141, you should consider using
File:Holmium2.jpg in the nomination, as I think it is pretty eye-catching. It appears this is the user's fifth nomination, so no QPQ needed. Note the source is offline, AGF. However the fact also appears widely cited in other online sources. « Gonzo fan2007(talk) @ 16:34, 11 August 2023 (UTC)reply
Is the boiling point known to the nearest degree? The numbers in the article snd the box both look like false precision based on the nearest hundred or thousand (3000 K / 2600 Celsius).
46.188.244.112 (
talk)
03:05, 25 August 2023 (UTC)reply