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    Be

    Beryllium

    Alkaline Earth

    Atomic Number: 4 • Atomic Mass: 9.0122 u • Period: 2 • Group: 2

    Electron Configuration: 1s² 2s²
    Phase: Solid
    Electronegativity: 1.57
    Lithium (Li)Boron (B)
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    Occurrence

    Beryllium is found in various natural sources, including minerals, rocks, and the Earth's crust.

    • Relatively rare in the universe and Earth's crust
    • Found in about 30 minerals, most commonly beryl
    • Not found free in nature
    • Forms compounds with many elements