Neptunium

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Neptunium ions in solution.

Neptunium ( ) is a chemical element with the symbol Np and atomic number 93. A radioactive metal, neptunium is the first transuranic element, and belongs to the actinide series. Its most stable isotope, ²³⁷Np, is a by-product of nuclear reactors and plutonium production, and it can be used as a component in neutron detection equipment. Neptunium is also found in trace amounts in uranium ores due to transmutation reactions.

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WebElements.com – Neptunium WebElements.com – Neptunium www.webelements.com/neptunium/ - Web

Lab builds world's first neptunium sphere Lab builds world's first neptunium sphere www.eurekalert.org/features/doe/2001-08/danl-lbw060502.php - Web

NLM Hazardous Substances Databank – Neptunium, Rad... NLM Hazardous Substances Databank – Neptunium, Radioactive toxnet.nlm.nih.gov/.../r?dbs+hsdb:@term+@na+@rel+neptunium,+radioactive - Web

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Neptunium: Human Health Fact Sheet Neptunium: Human Health Fact Sheet www.ead.anl.gov/pub/doc/neptunium.pdf - Web

C&EN: It's Elemental: The Periodic Table – Neptuni... C&EN: It's Elemental: The Periodic Table – Neptunium pubs.acs.org/cen/80th/neptunium.html - Web

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