4Be
Beryllium
Alkaline Earth MetalBeryllium (Be) is element 4, an alkaline earth metal, in period 2 and group 2 of the periodic table. Its standard atomic weight is 9.012, it melts at 1287 °C and boils at 2469 °C. Discovered by Louis Nicolas Vauquelin, 1798.
Atomic Number4
SymbolBe
NameBeryllium
Atomic Weight9.012 u
CategoryAlkaline Earth Metal
Period2
Group2
Melting Point1287 °C
Boiling Point2469 °C
Density1.85 g/cm³
Electron Config[He] 2s2
Discovered ByLouis Nicolas Vauquelin, 1798