Periodic table of elements

4 - Beryllium [Be]

4: Beryllium - Beryllium [Be]
Group: 2
Period: 2
Atomic number: 4
Atomic mass: 9.012182
Configuration: [He] 2s2
Atomic radius: 112 pm
Covalent radius: 96 pm
Electron affinity: 0 eV
Ionization energy: 9.3227 eV
Electronic term: 1S0
Mass fraction in the earth crust: 0.0000019
Mass fraction in the earth space: 0.000000001
Electronegativity: 1.57

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