Pembicaraan:Unsur periode 1

message: Hello fellow editors,
I have found one or more external links on Unsur periode 1 that are in need of attention. Please take a moment to review the links I found and correct them on the article if necessary. I found the following problems:
*http://hydrogentwo.com/hydrogen-halogen.html is considered to be dead, however has been found to be alive. Recommend removing the dead flag from the URL.
*http://www.iupac.org/publications/ci/2003/2506/ud.html is found to be dead. Recommend adding https://web.archive.org/web/20171021055933/https://www.iupac.org/publications/ci/2003/2506/ud.html to the original URL.
*http://old.iupac.org/reports/periodic_table/ is found to be dead. Recommend adding https://web.archive.org/web/20180927055740/http://old.iupac.org/reports/periodic_table/ to the original URL.
*http://www.eia.doe.gov/kids/energyfacts/sources/IntermediateHydrogen.html is found to be dead. Recommend adding https://web.archive.org/web/20090205025706/http://eia.doe.gov/kids/energyfacts/sources/IntermediateHydrogen.html to the original URL.
*http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/971113i.html is found to be dead. Recommend adding https://web.archive.org/web/20141029152908/http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/971113i.html to the original URL.
*http://www.fsec.ucf.edu/en/consumer/hydrogen/basics/production.htm is found to be dead. Recommend adding https://web.archive.org/web/20191125015224/http://www.fsec.ucf.edu/en/consumer/hydrogen/basics/production.htm to the original URL.
*http://www.dtu.dk/English/About_DTU/News.aspx?guid=%7BE6FF7D39-1EDD-41A4-BC9A-20455C2CF1A7%7D is found to be dead. Recommend adding https://web.archive.org/web/20100107204859/http://www.dtu.dk/English/About_DTU/News.aspx?guid=%7BE6FF7D39-1EDD-41A4-BC9A-20455C2CF1A7%7D to the original URL.
*http://www.webelements.com/helium/ is found to be dead. Recommend adding https://web.archive.org/web/20080714102813/http://www.webelements.com/helium/ to the original URL.
*http://www.webelements.com/helium/physics.html is found to be dead. Recommend adding https://web.archive.org/web/20171125071245/https://www.webelements.com/helium/physics.html to the original URL.
*http://www.howstuffworks.com/helium.htm is found to be dead. Recommend adding https://web.archive.org/web/20151206200726/http://www.howstuffworks.com/helium.htm to the original URL.
*http://www.popsci.com/military-aviation-space/article/2008-07/return-blimp is found to be dead. Recommend adding https://web.archive.org/web/20200822221538/https://www.popsci.com/military-aviation-space/article/2008-07/return-blimp/ to the original URL.
*http://www.sciam.com/article.cfm?id=why-does-inhaling-helium is found to be dead. Recommend adding https://web.archive.org/web/20201003101111/https://www.scientificamerican.com/article/why-does-inhaling-helium/ to the original URL.
*http://www.sciencedaily.com/releases/2004/09/040903085531.htm is found to be dead. Recommend adding https://web.archive.org/web/20121014214336/http://www.sciencedaily.com/releases/2004/09/040903085531.htm to the original URL.
*http://www.webelements.com/helium/geology.html is found to be dead. Recommend adding https://web.archive.org/web/20200804144514/https://www.webelements.com/helium/geology.html to the original URL.
*http://www.newscientist.com/article/mg12517027.000-origin-of-the-chemical-elements.html is found to be dead. Recommend adding https://web.archive.org/web/20121016082600/http://www.newscientist.com/article/mg12517027.000-origin-of-the-chemical-elements.html to the original URL.
*http://www.aapg.org/explorer/2008/02feb/helium.cfm is found to be dead. Recommend adding https://web.archive.org/web/20120304060842/http://www.aapg.org/explorer/2008/02feb/helium.cfm to the original URL.
*http://www.rsc.org/periodic-table/element/1/hydrogen is found to be dead. Recommend adding https://web.archive.org/web/20230924122324/https://www.rsc.org/periodic-table/element/1/hydrogen to the original URL.
*http://www.rsc.org/periodic-table/element/2/helium is found to be dead. Recommend adding https://web.archive.org/web/20230722112421/https://www.rsc.org/periodic-table/element/2/helium to the original URL.
When you have finished making the appropriate changes, please visit this simple FaQ for additional information to fix any issues with the URLs mentioned above.
This notice will only be made once for these URLs.
Cheers.—InternetArchiveBot (Melaporkan kesalahan) 20 Oktober 2023 16.30 (UTC)
thread_title:  External links found that need fixing (Oktober 2023)