RADIUM
RADIUM (88) (Solid) 226(1,600 years)A Atomic radius: Atomic volume:45.2 cm(3)/mol at 300Deg. Kelvin Atomic weight:226.0254 (Based on Carbon 12) Boiling point:1809Deg. Kelvin Covalent radius: Crystal structure:Cubic,body centered Density:5 g/cm(3) at 300Deg. Kelvin Electrical conductivity: Electron configuration:1s(2)2s(2)p(6)3s(2)p(6)3d(10)4s(2)p(6)4d(10)5s(2)p(6) 4f(14)5d(10)6s(2)p(6)7s(2) Electronegativity:.9 (Pauling's) First ionization potential:5.279 V Heat of fusion: Heat of vaporization: Melting point:973Deg. Kelvin Oxidation states:2 very basic Specific heat capacity: Thermal conductivity:.186 W cm(x.1) K(x.1) at 300Deg. Kelvin Description:An intensely radioactive,shining white metallic element that resembles barium chemically,occurs in combination in minute quantities in minerals(as in pitchblende and carnotite) emits alpha particles and gamma rays to form radon,and is used chiefly in luminous materials and the treatment of cancer.