.ChemGlobe
ChemGlobePeriodic Table of the Elements
 
Polonium metal Solid
Symbol: Po
Atomic number: 84
Atomic mass: (208.9824)
Group: Metal
CAS-number: 7440-08-6

Text version
Deutsch
Physical data
Isotopes
Other info
 
Table navigation panel
Back to periodic table

Te
Tellurium
Bi Bismuth To Periodic Table Astatine At
Ununhexium
Uuh

Go to element
Bottom

Physical data

Electronic data

 

Thermal data

 

Steric data

Shells: 2,8,18,32,18,6
Orbitals: [Xe] 4f14 5d10 6s2 6p4
Electronegativity: 1.8, 2.0
1. Ionization potential: 8.4167 eV
2. Ionization potential: -- eV
3. Ionization potential: -- eV
Oxidation states: 6,4,2
Electrical conductivity: 0.0219 10^6
Melting point: 254 °C
Boiling point: 962 °C
Specific heat: 0.12 J/gK
Heat of fusion: -- kJ/mol
Heat of vaporization: -- kJ/mol
Thermal conductivity: 0.20 W/cmK
Atomic radius: 1.53 Å
Ionic radius: -- Å ()
Covalent radius: 1.46 Å
Atomic volume: 22.23 cm³/mol
Density (293 K): 9.4 g/cm³
Crystal structure: Monoclinic
Monoclinic
Legend      Pocket calculator
TopBottom

Isotopes

NuclideAbundance [%]MassSpinHalflifeDecay modeDecay tree
206Po0205.98108.8dEC,AlphaView
207Po02075/25.80hECView
208Po0207.98102.898yAlpha,ECView
209Po0208.9821/2102yAlpha,ECView
210Po0209.9830138.38dAlphaView
211Po0210.9879/20.516sAlphaView
212Po0211.98900.298µsAlphaView
213Po0212.9939/24µsAlphaView
214Po0213.9950163.7µsAlphaView
215Po0214.9999/21.780msAlpha,Beta-View
216Po0216.00200.145sAlphaView
218Po0218.00903.10mAlpha,Beta-View
Legend
TopBottom

Other info

Name origin:Named for Poland, native country of Marie Curie.
Description:Silvery-gray, extremely rare, radioactive metal.
Discovered by:Pierre and Marie Curie
Year:1898
Place:France
Sources:Occurs in pitchblende from decay of bismuth.
Use(s):Used in industrial equipment that eliminates static electricity caused by such processes as rolling paper, wire, and sheet metal.
 
© 2000 Information
Submit an error-report ChemGlobe