Home > Science > Chemistry > Elements > Neptunium
http://www.chemicalelements.com/elements/np.html
Basic information, atomic structure, and isotopes table.
http://www.britannica.com/EBchecked/topic/409383/neptunium
Overview, discovery, structure and properties.
http://environmentalchemistry.com/yogi/periodic/Np.html
Atomic structure, chemical and physical properties, and table of nuclides.
http://education.jlab.org/itselemental/ele093.html
Basic physical and historical information.
http://www.lenntech.com/Periodic-chart-elements/Np-en.htm
Physical data, chemical properties, health and environmental effects.
http://www.webelements.com/neptunium/
Extensive information on history, uses, compounds, and properties.
http://en.wikipedia.org/wiki/Neptunium
Notable characteristics, history, occurrence, isotopes, and weapons applications.
Home > Science > Chemistry > Elements > Neptunium
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