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Key information about the chemical elements

WebElements™ was first released in September 1993 but -warning- the first versions (1.0-1.1 and various sub-versions) contain many errors in the data. I have tried to get all pirated copies of WebElements™ version 1 off the WWW but there are still a few out there. WebElementsTM is the WWW version of a computer program for Macintoshes called MacElements™ that I started work upon in 1989...For more details visit: www.webelements.com