Home > Science > Chemistry > Elements > Promethium
http://www.chemicalelements.com/elements/pm.html
Basic information, atomic structure, and isotopes.
http://environmentalchemistry.com/yogi/periodic/Pm.html
Atomic structure, chemical and physical properties, and table of nuclides.
http://education.jlab.org/itselemental/ele061.html
Basic physical and historical information.
http://www.lenntech.com/Periodic-chart-elements/Pm-en.htm
Physical data, chemical properties, health and environmental effects.
http://www.webelements.com/promethium/
Extensive information on history, uses, occurrence, compounds, and properties.
http://en.wikipedia.org/wiki/Promethium
Properties of the element, including its history, applications, and characteristics.
Home > Science > Chemistry > Elements > Promethium
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