Chlorine
Links
ChemicalElements.com: Chlorine
http://www.chemicalelements.com/elements/cl.html
Basic information, atomic structure, and isotopes.
Chlorine
http://www.ucc.ie/ucc/depts/chem/dolchem/html/elem/elem017.html
Preparation, manufacture, uses, and details of reactions.
Chlorine
http://www.scescape.net/~woods/elements/chlorine.html
Data tables and historic information.
EnvironmentalChemistry.com: Chlorine
http://environmentalchemistry.com/yogi/periodic/Cl.html
Atomic structure, chemical and physical properties, and table of nuclides.
Especil Gas Inc.: Chlorine
http://www.c-f-c.com/specgas_products/chlorine.htm
Numeric data, uses, and general information.
It's Elemental: Chlorine
http://education.jlab.org/itselemental/ele017.html
Basic physical and historical information.
Lenntech: Chlorine
http://www.lenntech.com/Periodic-chart-elements/Cl-en.htm
Physical data, chemical properties, health and environmental effects.
Visual Elements: Chlorine
http://www.chemsoc.org/viselements/pages/chlorine.html
Image, animation, uses, biological role, and key isotopes.
WebElements: Chlorine
http://www.webelements.com/webelements/elements/text/Cl/key.html
Extensive information on history, uses, occurrence, compounds, and properties of the element.
Wikipedia: Chlorine
http://www.wikipedia.org/wiki/Chlorine
Properties of the element, including its history, applications, and charateristics.