Thorium

Source: http://www.tabulka.cz/english/elements/show.asp?id=90

name Thorium
latin Thorium
french Thorium
german Thorium
symbol Th
proton number 90
atomic weight 232.0381
Pauling electronegativity 1.3
electronic configuration [Rn] 5f06d27s2
1s22s22p63s23p63d104s24p64d105s25p64f145d106s26p65f06d27s2
melting point 2115 K, 1842°C, 3347°F
boiling point 5093 K, 4820°C, 8708°F
group -
period 7
state (by 20°C) solid
oxidation states +4

Discoverer

Year of discovery Discoverer
1828 Jons J. Berzelius (1779-1848)


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