Periodic table

 

 

Atomic number:84

Group numbers:16

Period:6

Electronic configuration:[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁴

Formal oxidation number:+2 +4

Electronegativities:2

Atomic radius / pm:167.3

Relative atomic mass:[209]

 

Polonium was discovered by Marie Sklodowska Curie and Pierre Curie (FR) in 1898. Named for Poland, native country of Marie Curie. It is a silvery-grey, extremely rare, highly toxic, severe radiotoxic, carcinogen, radioactive metal that is soluble in dilute acids. Polonium occurs in pitchblende. It's produced by bombarding bismuth with neutrons. It is used in industrial equipment that eliminates static electricity caused by such processes as rolling paper, wire and sheet metal.

PHYSICAL PROPERTIES

Density / g dm^-3:9320 (alpha, 293 K)

Molar volume / cm³mol^-1:22.42 (alpha, 293 K)

Electrical resistivity / μΩcm:140 (20 °C)

THERMAL PROPERTIES

Thermal conductivity / W m^-1K^-1:20

Melting point / °C:254

Boiling point / °C:962

Heat of fusion / kJ mol^-1:10

Heat of vaporization / kJ mol^-1:100.8

Heat of atomization / kJ mol^-1:141

IONIZATION ENERGIES

First ionization energy / kJ mol^-1:812.09

Second ionization energy / kJ mol^-1:-

Third ionization energy / kJ mol^-1:-

ABUNDANCE OF ELEMENTS

in the atmosphere / ppm:-

in the Earth's crust / ppm:-

in the oceans / ppm:-

CRYSTALLOGRAPHIC DATA

ISOTOPES

REDUCTION POTENTIALS

 

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Citing this page:

Generalic, Eni. "Polonium." EniG. Periodic Table of the Elements. 3 Jan. 2012. KTF-Split. {Date of access}. <http://www.periodni.com/po.html>.