Symbol	Ra	Atomic radius: pm	-	Fusion: kJ/Mole	7.15
Name	Radium	Ionic radius: pm	(+2)162	Boiling point: °C	-
Atomic number	88	Electron affinity	-	Melting point: °C	700
Atomic weight	226.0	1st  ion potential	5.28	Specific Heat Cap: J/(g K)	-
Classification	Alk earth metal	Natural form	Solid	Thermal Cond: W/(cm K)	-
Configuration	[Rn]7s2	Crystal structure	BCC	Electrical Cond	-
Oxidation states	2	Density	5.0	Abundance: mg/kg-crust	<0.001
Electronegativity	0.9	Vaporization: kJ/Mole	136.8
Radium was discovered in 1898 by Pierre and Marie Curie and an assistant, G. Bémont.			Uses -  neutron source, treating cancer, self-luminous paints