The periodic table and the elements
New software - request for feedback
Submitted by WebElements on 13 May 2006 - 9:29am.I'm spending far too long deleting spam posts from Russia and their posters at present. The current software takes too long to update when changes come along since version updates require source code modifications to keep added features working.
I have identified different software that I may switch to over in the next couple of months but I'd like to here what features you like/dislike on the current system, and what features you might like in the future. Please add comments....
sodium
Submitted by huh huh huh on 19 November 2009 - 11:22pm.blog and post comments about sodium here will check daily if blogging here please add me to ur contact list ty
diamagnetism
Submitted by wasimsalafi on 26 October 2009 - 11:54am.why silver is diamagnetic, although it is having unpaired electrons?
Number of elements present in the periodic table
Submitted by anita2525 on 12 August 2009 - 10:57am.Can someone tell me what is the total number of elements present in the periodic table? Some say it is 114, Others say it is 118 . There are still others who claim the number to be 122. Justify your answer giving reasons.
Selenium
Submitted by Kingcheese26 on 7 August 2009 - 8:45pm.I've seen various different periodic tables that call selenium a nonmetal and a semimetal. Which one is correct?
Element 112
Submitted by Martin17 on 3 August 2009 - 3:38am.To view this message in MSWord, a notoriously illiterate and substandard word-processing program of extremely limited capabilities, you may have to switch the font to Lucida sans unicode to view all of the characters that competent word-processors use without such complexities.
moles
Submitted by mike on 21 June 2009 - 8:31am.How did Avogadro calculate the number of atoms in 1 mole?
Mike
Recent articles and other publications on the Periodic Table
Submitted by bloggoman on 3 May 2009 - 1:45am.An article appeared in the British chemistry magazine, 'Chemistry World'
recently, entitled Periodic Change, by Eric Scerri. In it Scerri reviews the alterantive periodic tables currently available and explains the main categories of periodic systems. see his website for other titles
http://faculty.chemistry.ucla.edu/institution/personnel?personnel%5fid=294334
Another article is by Michelle Francl in the new journal 'Nature Chremistry' issue 2. This is titled 'Table Manners'. Also, Eric Scerri Selected Papers on the Periodic Table, Imperial College Press, 2009.
The Alternative Periodic Table
Submitted by Vts on 24 February 2009 - 2:00pm.Besides traditional periodic table there are hundreds of alternative formulations. However, the most notable alternative is Left Step Periodic Table (LSPT), proposed by Charles Janet in 1928. Recent article in Foundations of Chemistry journal entitled "Charles Janet: unrecognized genius of the periodic system" by Oxford professor Dr. Philip Stewart is in many respects the first complete account of incredible discoveries made by the author of LSPT. One of them, for example, discovery of n+l rule at least 6 years before the Madelung! The article also discusses the late improvement of the LSPT: ADOMAH PT that can be found at perfectperiodictable.com that is built strictly in accordance with electron configurations.
Uses of Thorium - addition
Submitted by Iain-F on 23 November 2008 - 12:02am.Further use for Thorium
Thorium oxide is used in "thoriated" tungsten electrodes for TIG welding.
Reference http://www.twi.co.uk/content/faq_thoriated.html
Being phased out due to dust hazards when electrodes are re-ground.
