promethium: References & Edit History
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The Editors of Encyclopaedia Britannica
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.
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Karl A. Gschneidner, Jr.
Anson Marston Distinguished Professor, Ames Laboratory, Iowa State University, Ames, Iowa.
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Vitalij K. Pecharsky
Distinguished Professor, Ames Laboratory, Iowa State University, Ames, Iowa.
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Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Added media. | Mar 01, 2024 | ||
| Modified link of Web site: Live Science - Facts About Promethium. | Jun 23, 2022 | ||
| Add new Web site: National Center for Biotechnology Information - PubChem - Promethium. | May 24, 2021 | ||
| Add new Web site: Live Science - Facts About Promethium. | Feb 20, 2017 | ||
| Add new Web site: Chemicool - Promethium. | Apr 28, 2014 | ||
| Add new Web site: WebElements - Promethium. | Apr 28, 2014 | ||
| Article revised jointly with Vitalij K. Pecharsky. | Oct 02, 2012 | ||
| Article revised jointly with Karl A. Gschneidner, Jr. | Oct 02, 2012 | ||
| Article revised and updated. | Apr 17, 2009 | ||
| Added new Web site: Chemical Elements.com - Promethium. | Jun 09, 2008 | ||
| Added new Web site: Lenntech - Promethium. | Jun 09, 2008 | ||
| Added new Web site: Los Alamos National Laboratory - Promethium. | Jun 09, 2008 | ||
| Added new Web site: EnvironmentalChemistry.com - Promethium. | Jun 09, 2008 | ||
| Added new Web site: Royal Society of Chemistry - Promethium. | Jun 09, 2008 | ||
| Article added to new online database. | Jul 20, 1998 |
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