4
9.0122 u
Be
Beryllium
Alkaline Earth Metal
Atomic Structure
Physical State
Group
2
Period
2
Block
s
Electron Configuration
[He] 2s²
Physical Properties
Atomic Mass:
9.0122 u
Electronegativity:
1.57
Atomic Radius:
153 pm
Ionization Energy:
9.323 eV
Density:
1.85 g/cm³
Melting Point:
1560 K
Boiling Point:
2742 K
Historical Information
Discovered By:
Louis Nicolas Vauquelin
Year Discovered:
1798