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Plutonium at Chemical Elements.com
Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page

Basic Information

Name: Plutonium
Symbol: Pu
Atomic Number: 94
Atomic Mass: (244.0) amu
Melting Point: 639.5 °C (912.65 K, 1183.1 °F)
Boiling Point: 3235.0 °C (3508.15 K, 5855.0 °F)
Number of Protons/Electrons: 94
Number of Neutrons: 150
Classification: Rare Earth
Crystal Structure: Monoclinic
Density @ 293 K: 19.84 g/cm3
Color: Unknown

Atomic Structure

[Bohr Model of Plutonium]  
Number of Energy Levels: 7

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 32
    Fifth Energy Level: 24
    Sixth Energy Level: 8
    Seventh Energy Level: 2


Isotope Half Life
Pu-2362.87 years
Pu-23745.2 days
Pu-23887.7 years
Pu-23924100.0 years
Pu-2406560.0 years
Pu-24114.4 years
Pu-242375000.0 years
Pu-2434.95 hours
Pu-2448.0E7 years
Pu-24510.5 hours
Pu-24610.85 days


Date of Discovery: 1940
Discoverer: G.T. Seaborg
Name Origin: After the planet Pluto
Uses: bombs, nuclear reactors
Obtained From: some uranium ores, man-made

Related Links

Note: The external links below are not a part of this site and their content is not the responsibility of this site
  1. A Perspective on the Dangers of Plutonium
    • From the Lawrence Livermore National Laboratory
If you know of any other links for Plutonium, please let me know

MLA Format for Citing This Page

Bentor, Yinon. Chemical Element.com - Plutonium. <http://www.chemicalelements.com/elements/pu.html>.

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