Praseodymium

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Revision as of 17:27, 28 April 2011 by imported>Milton Beychok (Add some properties to Infobox)
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Praseodymium
140.90765(2)



  Pr
59
1s22s22p63s23p63d104s24p6 4d105s25p64f36s2
[ ? ] Lanthanide:
Properties:
Soft, silvery, malleable, and ductile metal.


Praseodymium is a chemical element, having the chemical symbol Pr. Its atomic number (the number of protons) is 59. It has a standard atomic weight of 140.9077 g•mol −1 and is a solid in its elemental form.

Praseodymium is cosidered a member of the "Lanthanide" class of elements. At a pressure of 101.325 kPa, it has a boiling point of 3,520 °C and a melting point of 931 °C.

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