Atomic Number: 4

Name: Beryllium

Atomic symbol: Be

Atomic Weight: 9.01218

Electron configuration: 1s²2s²

Ionization energies: 899 kJ/mol; 1,757 kJ/mol; 14,848 kJ/mol; 21,006 kJ/mol

Pauling electronegativity: 1.5

Melting Point: 1278^oC

Boiling Point: 2970^oC

Density: 1.85 g/cm³

Standard potential (volts), M⁺ + e^- ---> M: -1.70

Covalent radius: 0.89 angstroms

Ionic radius: 0.59 angstroms (+1), 0.35 angstroms (+2)

Common oxidation states in compounds: +2