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Information valid for Po-209 unless otherwise noted

Basic Information

Symbol: Po
Atomic Number: 84
Mass: (209.0)
Melting Point: 254.0 C
Boiling Point: 962.0 C
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

  1. 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-206 8.8 days
Po-207 5.8 hours
Po-208 2.89 years
Po-209 102.0 years
Po-210 138.38 days
Po-211 0.51 seconds
Po-212 0.29 microseconds
Po-213 4.0 microseconds
Po-214 163.7 microseconds
Po-215 1.78 milliseconds
Po-216 0.14 seconds
Po-218 3.1 minutes


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