Barium

Source: http://www.tabulka.cz/english/elements/show.asp?id=56

name Barium
latin Baryum
french Baryum
german Barium
symbol Ba
proton number 56
atomic weight 137.327
Pauling electronegativity 0.89
electronic configuration [Xe] 6s2
1s22s22p63s23p63d104s24p64d105s25p66s2
melting point 1000 K, 727°C, 1340°F
boiling point 2143 K, 1870°C, 3398°F
group 2
period 6
state (by 20°C) solid
oxidation states +2

Discoverer

Year of discovery Discoverer
1808 Sir Humphry Davy (1778-1829)


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