Be

Element Name: Beryllium
Atomic No.: 4
State (298 K): Solid
Uses: used in alloys
Atomic Mass: 9.012 g/mol
Density: 1.85 g/cm 3
B.P.: 3243 K
F.P.: 1550 K
Electronic Configuration: 1s 2 2s 2
Isotopes: 9 Be 9.012 amu (100%)
Electronegativity: 1.57
Radius: 113 pm (covalent)

 

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