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

Basic Information

Name: Polonium
Symbol: Po
Atomic Number: 84
Atomic Mass: (209.0) amu
Melting Point: 254.0 °C (527.15 K, 489.2 °F)
Boiling Point: 962.0 °C (1235.15 K, 1763.6 °F)
Number of Protons/Electrons: 84
Number of Neutrons: 125
Classification: Metalloid
Crystal Structure: Monoclinic
Density @ 293 K: 9.4 g/cm3
Color: Unknown

Atomic Structure

[Bohr Model of Polonium]  
Number of Energy Levels: 6

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 32
    Fifth Energy Level: 18
    Sixth Energy Level: 6


Isotope Half Life
Po-2068.8 days
Po-2075.8 hours
Po-2082.89 years
Po-209102.0 years
Po-210138.38 days
Po-2110.51 seconds
Po-2120.29 microseconds
Po-2134.0 microseconds
Po-214163.7 microseconds
Po-2151.78 milliseconds
Po-2160.14 seconds
Po-2183.1 minutes


Date of Discovery: 1898
Discoverer: Pierre and Marie Curie
Name Origin: After Poland
Uses: No uses known
Obtained From: pitchblende, decay of radium

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