Pembicaraan:Periode tabel periodik

message: Hello fellow editors,
I have found one or more external links on Periode tabel periodik 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://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.inchem.org/documents/iarc/vol58/mono58-1.html is found to be dead. Recommend adding https://web.archive.org/web/20120803081509/http://www.inchem.org/documents/iarc/vol58/mono58-1.html to the original URL.
*http://www.webelements.com/helium/ is found to be dead. Recommend adding https://web.archive.org/web/20080920074743/http://www.webelements.com/helium/ to the original URL.
*http://www.borax.com/agriculture/files/an203.pdf is found to be dead. Recommend adding https://web.archive.org/web/20090320175602/http://www.borax.com/agriculture/files/an203.pdf to the original URL.
*http://www.chron.com/news/houston-texas/article/Helium-shortage-leaves-partygoers-deflated-1856442.php is found to be dead. Recommend adding https://web.archive.org/web/20221126181920/https://www.chron.com/news/houston-texas/article/Helium-shortage-leaves-partygoers-deflated-1856442.php to the original URL.
*http://www.webelements.com/lithium/ is found to be dead. Recommend adding https://web.archive.org/web/20171017194329/https://www.webelements.com/lithium/ to the original URL.
*http://www.inchem.org/documents/iarc/vol58/mono58-1.html is found to be dead. Recommend adding https://web.archive.org/web/20120803081509/http://www.inchem.org/documents/iarc/vol58/mono58-1.html to the original URL.
*http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1469698/pdf/envhper00348-0096.pdf is found to be dead. Recommend adding https://web.archive.org/web/20231011071559/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1469698/pdf/envhper00348-0096.pdf to the original URL.
*https://www.ncbi.nlm.nih.gov/pubmed/15012243 is found to be dead. Recommend adding https://web.archive.org/web/20130619222633/http://www.ncbi.nlm.nih.gov/pubmed/15012243 to the original URL.
*http://www.foresight.org/Nanomedicine/Ch03_1.html is considered to be dead, however has been found to be alive. Recommend removing the dead flag from the URL.
*http://www.ncbi.nlm.nih.gov/books/NBK26883/ is found to be dead. Recommend adding https://web.archive.org/web/20230525060135/https://www.ncbi.nlm.nih.gov/books/NBK26883/ to the original URL.
*http://chemed.chem.purdue.edu/genchem/topicreview/bp/1organic/organic.html is found to be dead. Recommend adding https://web.archive.org/web/20200510201156/http://chemed.chem.purdue.edu/genchem/topicreview/bp/1organic/organic.html to the original URL.
*http://www.webelements.com/nitrogen/ is found to be dead. Recommend adding https://web.archive.org/web/20130928033011/http://www.webelements.com/nitrogen/ to the original URL.
*http://www.webelements.com/oxygen/ is found to be dead. Recommend adding https://web.archive.org/web/20080516054859/http://www.webelements.com/oxygen/ to the original URL.
*http://www.webelements.com/fluorine/ is found to be dead. Recommend adding https://web.archive.org/web/20230804134213/https://webelements.com/fluorine/ to the original URL.
*http://www.webelements.com/neon/ is found to be dead. Recommend adding https://web.archive.org/web/20080911175431/http://www.webelements.com/neon/ to the original URL.
*http://www.webelements.com/sodium/ is found to be dead. Recommend adding https://web.archive.org/web/20230805202544/https://webelements.com/sodium/ 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) 12 Oktober 2023 10.08 (UTC)
thread_title:  External links found that need fixing (Oktober 2023)