McGraw-Hill, 2012.

The premiere organization concerned with chemistry publications, research, education and accreditation.

Written and maintained by the author as a public service for scientific knowledge and education. Although it is often difficult to find explanations for technical subjects that are both clear and accessible, this web site bridges the gap by placing an interlinked framework of mathematical exposition and illustrative examples at the fingertips of every Internet user.

Links to resources on history, uses, chemistry etc. of each element.

Useful formulas and calculations automated online, from the University of Massachusetts.

Provides access to data compiled and distributed by NIST under the Standard Reference Data Program.