Plutonium From Nuclear Tests Lingers in the Atmosphere | Science | Smithsonian Magazine
Plutonium (Pu) - Chemical properties, Health and Environmental effects
Plutonium - Characteristics, Uses and Obtaining
Colors of the different oxidation states of plutonium, in 1 M HClO4. (Pu(V) is in NaClO4 at pH=7, Pu(VII) is in 2.5 M NaOH.). interesting natural forms - Buscar…
21 Plutonium Facts (Pu or Atomic Number 94)
Is Uranium the Heaviest Natural Element? | ScienceBlogs
Plutonium - Wikipedia
What Is the Most Expensive Element?
Why was plutonium dust left to blow for miles across a Washington plateau? - oregonlive.com
Analysis shows elements not acting in nature as previously modeled