Periodic table of elements

5 - Boron [B]

5: Boron - Borum [B]
Group: 13
Period: 2
Atomic number: 5
Atomic mass: 10.811
Configuration: [He] 2s22p1
Atomic radius: 87 pm
Covalent radius: 84 pm
Electron affinity: 26.7 eV
Ionization energy: 8.298 eV
Electronic term: 2P1/2
Mass fraction in the earth crust: 0.0000086
Mass fraction in the earth space: 0.000000001
Electronegativity: 2.04

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