Praseodymium

Source: http://www.tabulka.cz/english/elements/show.asp?id=59

name Praseodymium
latin Praseodymium
french Praséodyme
german Praseodym
symbol Pr
proton number 59
atomic weight 140.90765
Pauling electronegativity 1.13
electronic configuration [Xe] 4f35d06s2
1s22s22p63s23p63d104s24p64d105s25p64f35d06s2
melting point 1208 K, 935°C, 1715°F
boiling point 3563 K, 3290°C, 5954°F
group -
period 6
state (by 20°C) solid
oxidation states +3, +4

Discoverer

Year of discovery Discoverer
1885 baron Carl A. von Welsbach (1858-1929)


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