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Plutonium



Name Plutonium
Atomic Number 94
Atomic Weight 224
Symbol Pu
Melting Point ( °C ) 640 °C
Boiling Point ( °C ) 3228°C
Density (g/cm3) .19.84
Earth crust (%) NA
Discovery (Year) Officially announced 1946, really created 1941.
Group none
Electron configuration Rn 5f6 7s2
Ionization energy (eV) 6.06 eV

Plutonium When plutonium was first manufactured at Berkeley in the spring of 1941, there was so little of it that it was not visible to the naked eye. It took a year to accumulate enough so that one could actually see it. Now there is so much that we don’t know what to do to get rid of it. We have created a monster. -- Jeremy Bernstein

Produced by Glenn T. Seaborg, Joseph W. Kennedy, Edward M. McMillan and Arthur C. Wohl and when decays by beta decay turns into plutonium.

First real discovery was in 1941 , but since there was war it wasn’t officially declared until 1946.

Oxidation states are +6. +5, +4, +3.

Electron shell configurations: 1s2, 2s2 2p2, 3s2 3p6 3d10, 4s2 4p6 4d10 4f14, 5s2 5p6 5d10 5f6, 6s2 6p6, 7s2.

Classified as an Element. Are radioactive and Artificially produced. Created neptunium

References

http://education.jlab.org/itselemental/ele011.html <references/>