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Name Beryllium
Atomic Number 4
Atomic Weight 9.0122
Symbol Be
Melting Point ( °C ) 1278
Boiling Point ( °C ) 2970
Density (g/cm3) 1.85
Earth crust (%)
Discovery (Year) 1797
Group 2
Electron configuration [He]2s2
Ionization energy (eV) 9.3227

Beryllium is the fourth element listed on the periodic table discovered by Louis-Nicolas Vauquelin in 1798. The element is an alkaline earth metal, group IIA. The chemistry of the element is mostly based on the loss of two electrons.




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