• Latin name:
  Polonium
• English name:
  Polonium
• Year discovered:
  1898
• Discovered by:
  Pierre Curie, Marie Skłodowska Curie
• Country of Discovery:
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• Cost per 100 grams:
  ----
• CAS Number:
  CAS7440-08-6
• Electron shell:
  K2-L8-M18-N32-O18-P6-Q0-R0

Polonium is a chemical element with symbol Po and atomic number 84, discovered in 1898 by Marie Curie and Pierre Curie. A rare and highly radioactive element with no stable isotopes, polonium is chemically similar to bismuth and tellurium, and it occurs in uranium ores. Applications of polonium are few.

• Atomic number:
  84
• Atomic weight (Relative atomic mass):
  208.962006199874 (g/mol)
• Density:
  9.196 (g/cm³)
• Melting point:
  254.0°C = 489.20°F = 527.15K
• Boiling point:
  962.0°C = 1763.60°F = 1235.15K
• Valence electrons:
  2, 4, 6
• Period:
  6
• Group:
  VIA
• Block:
  p - block
• Emission spectrum:
  

• Phase:
  Solid

  
• Fusion heat:
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• Specific heat:
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• Thermal expansion:
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• Vaporization heat:
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• Electron configuration:
  [Xe] 4f14 5d10 6s2 6p4 = 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p4
Oxidation states:

• -
• -
• -2
• -
• -
• -
• -
• +2
• -
• +4
• -
• +6
• -
• -
• -
• Ion charge:
  Po^{2+, 4+}
• The ionization potential of an atom:
  8.417 (eV)
• Atomic radius:
  135 (pm)
• Covalent radius:
  142 (pm)
• Van der Waals radius:
  197 (pm)

• Electrical conductivity:
  2500000.0 (S/m)
• Electrical type:
  ----
• Magnetic type:
  ----
• Volume magnetic susceptibility:
  ----
• Mass magnetic susceptibility:
  ----
• Molar magnetic susceptibility:
  ----
• Resistivity:
  4.3 ⋅ 10^-7 (Ω · m)
• Superconducting point:
  ----

• Debye temperature:
  ----

• Colour:
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• CAS Number:
  CAS7440-08-6
• CID Number:
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• RTEC Number:
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• Brinell hardness:
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• Mohs hardness:
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• Vickers hardness:
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• Bulk modulus:
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• Young's modulus:
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• Liquid density:
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• Molar volume:
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• Poisson's ratio:
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• Shear modulus:
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• Speed of sound transmission:
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• Refractive index:
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• Thermal conductivity:
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• Electronegativity:
  2
• Valence electrons:
  2, 4, 6
• Electron affinity:
  136.0 kJ/mole

• Radioactive:
  Yes
• Half life:
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• Lifetime:
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• Neutron cross section, barn:
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• Universe contains "Polonium" at the rate of
  ----
• Sun contains "Polonium" at the rate of
  ----
• Oceans contain "Polonium" at the rate of
  ----
• Human body contains "Polonium" at the rate of
  ----
• The Earth's crust consists of "Polonium" at the rate of
  2.0 ⋅ 10^-14%
• Meteorites consist of "Polonium" at the rate of
  ----