![[ATOM]](atom.gif) |
Polonium
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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]](b0084.gif) |
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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
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Isotopes
| 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 |
Facts
Date of Discovery: 1898
Discoverer: Pierre and Marie Curie
Name Origin: After Poland
Uses: No uses known
Obtained From: pitchblende, decay of radium