Beryllium

Symbol: Be
Atomic number: 4
Atomic mass: 9.01 g/mol
Number of charges: 2
Deposition equivalent: 2.802 mg/amin
Density: 1.848 g/cm³
Standard potential: -1.97V
Melting point: 1287°C
Electronegativity: 1.57 (Pauling scale)