Explains the basics of atomic structure, from simple definitions to information about quantum theory. Accurate and helpful basics whether or not you need the more advanced information.
Tells the story of Love Canal, NY and the contamination that was happening there and what has been done about it recently.
Provides a definition for both mole and molar mass and gives a step-by-step example problem to work through that shows how to compute molar mass. Also has a a molar mass calculator in which you can practice problems on.
A great site with a wealth of information on aluminum. Exceptionally thorough and helpful.
An excellent source of information on americium. Very helpful.
A very extensive sight on argon. Well organized and extremely helpful.
This is as thorough as site as you will find for information of all kinds on arsenic. Very helpful.
EnvironmentalChemistry.com offers an extensive site on the element, Einsteinium, of the Periodic Table of Elements.
An exceptionally thorough summary of known information on erbium. Very good site.
Extremely thorough site with all sorts of information on europium. Very helpful resource.
An exceptionally thorough site with almost all the information you could ever want on fermium. Highly recommended.
Great site with as much useful information on francium as you're likely to find anywhere.
This is as helpful and detailed a reference as you'll likely find on iodine or any basic information relating to iodine. Highly recommended.
Chances are, if you need to know anything about iridium, this site will have it. Exceptionally thorough.
An exceptionally thorough resource with an amazing set of data on krypton, it chemical and physical properties, its electron configuration and its isotopes, among other things.
EnvironmentalChemistry.com offers a thorough site all about the element neodymium.
A great reference for information on neon. This is as thorough of a site as you are likely to find.
An incredibly thorough source for information on nickel.
An exceptionally detailed and helpful resource for all sorts of information on nitrogen.
A site that has it all. This is probably the best place to start looking for information or data on osmium.