Internet Encyclopedia of Science
INORGANIC CHEMISTRY
A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

                   • HOME
• ABOUT
• CATEGORIES
• USE OF TEXT AND IMAGES
• NEWSLETTER

  



polonium (Po)


polonium atom
Polonium atom. Source: Wikipedia
A soft, gray, radioactive, metallic element of group VIA of the periodic table, discovered in 1898 by Marie Curie. It is found in trace amounts in uranium ores and may also be synthesized by neutron bombardment of bismuth. The commonest isotope, 210Po, emits alpha particles (half-life 138.4 days), and is used in neutron sources; the most stable isotope is 209Po.


atomic number 84
relative density 9.40
melting point 254°C (489°F)
boiling point 962°C (1,764°F)


Related category

   • INORGANIC CHEMISTRY


Also on this site:

Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History




BACK TO TOP