Boron

Source: http://www.tabulka.cz/english/elements/show.asp?id=5

name Boron
latin Borum
french Bore
german Bor
symbol B
proton number 5
atomic weight 10.811
Pauling electronegativity 2.04
electronic configuration [He] 2s22p1
1s22s22p1
melting point 2349 K, 2076°C, 3769°F
boiling point 4200 K, 3927°C, 7100°F
group 13
period 2
state (by 20°C) solid
oxidation states +3

Discoverer

Year of discovery Discoverers
1808 Sir Humphry Davy (1778-1829)
Joseph Louis Gay-Lussac (1778-1850)
Louis Jacques Thénard (1777-1857)


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