Radium

Source: http://www.tabulka.cz/english/elements/show.asp?id=88

name Radium
latin Radium
french Radium
german Radium
symbol Ra
proton number 88
atomic weight 226.0254
Pauling electronegativity 0.9
electronic configuration [Rn] 7s2
1s22s22p63s23p63d104s24p64d105s25p64f145d106s26p67s2
melting point 973 K, 700°C, 1292°F
boiling point 2010 K, 1737°C, 3158°F
group 2
period 7
state (by 20°C) solid
oxidation states +2

Discoverer

Year of discovery Discoverers
1898 Pierre Curie (1859-1906)
Marie Curie-Sklodowská (1867-1934)


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