Periodic Table -> Neptunium

Neptunium

Neptunium Details

Neptunium Symbol: Np

Neptunium Atomic Number: 93

Neptunium Atomic Weight: (237)

What is Neptunium?
Radioactive metallic transuranic element, belongs to the actinoids. Np-237, the most stable isotope, has a half-life of 2.2*10^6 years and is a by product of nuclear reactors. The other known isotopes have mass numbers 229 through 236, and 238 through 241. Np-236 has a half-life of 5*10^3 years. First produced by Edwin M. McMillan and P.H. Abelson in 1940.

You can link to this page, using the code below:

<a href="http://www.elementsdatabase.com/Neptunium-Np-93-element/" title="Neptunium - Periodic Table">Neptunium - Periodic Table</a>

Periodic Table | Banks

---

© Art Branch Inc. 2010 | Privacy | About | Contact