Symbol	Be	Atomic radius: pm	111	Fusion: kJ/Mole	7.9
Name	Beryllium	Ionic radius: pm	(+2)45	Boiling point: °C	2471
Atomic number	4	Electron affinity	Unstable anion	Melting point: °C	1287
Atomic weight	9.010	1st  ion potential	9.32	Specific Heat Cap: J/(g K)	1.83
Classification	Alk earth metal	Natural form	Solid	Thermal Cond: W/(cm K)	2.00
Configuration	1s22s2	Crystal structure	Hex	Electrical Cond	0.313
Oxidation states	2	Density	1.85	Abundance: mg/kg-crust	2.8
Electronegativity	1.57	Vaporization: kJ/Mole	308.8
Beryllium was discovered in 1798 by Fredrich Wohler.			Uses - x-ray windows, ceramics, spacecraft, missles, aircraft, copper alloys