Web ref.org: Mercury

Basic information on niobium, along with a summary of some of its major uses.

A nice set of paragraphs summarizing basic information on manganese, its properties and applications. Well done links on all technical terms and vocabulary.

A short entry on molybdenum, its properties and uses. Good links to definitions of all key terms used in the site. Good basic information.

A good summary of iodine's properties and uses, in a very student-friendly format.

A student friendly site with basic information (and links to definitions or examples of key terms) on iridium. Good job on uses.

A well written, easily followed entry on iron, its properties and compounds, as well as uses. Student friendly.

A nice, easily followed summary of krypton, its uses and properties.

Some basic information along with good information on uses and health related facts on arsenic.

A few well done paragraphs on chlorine, with descriptions of the element and its properties. One nice feature is that any technical term has a link to help you better understand it.

Nice entry on oxygen, its properties, and uses including good links to all the terminology in the entry.