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Beryllium

Chemical symbol: Be

Atomic number: 4

Atomic mass: 9.0122

Group: 2 (Alkali earth metals)

Period: 2

Block: s-block

Number of protons: 4

Number of electrons: 4

Number of neutrons (in the most common isotope): 5

Sources:

  • Knowledge Encyclopedia (book)

  • SCIENCIA (book)

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