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    Mg

    Magnesium

    Alkaline Earth

    Atomic Number: 12 • Atomic Mass: 24.3050 u • Period: 3 • Group: 2

    Electron Configuration: 1s² 2s² 2p⁶ 3s²
    Phase: Solid
    Electronegativity: 1.31
    Sodium (Na)Aluminum (Al)
    OverviewPropertiesAtomic StructureOccurrenceApplicationsHistory

    Overview

    Magnesium is the chemical element with the symbol Mg and atomic number 12. It belongs to the Alkaline Earth group and is located in period 3 of the periodic table. It exists as a solid under standard conditions.

    Basic Information

    • Symbol:Mg
    • Atomic Number:12
    • Atomic Mass:24.3050 u
    • Group:2
    • Period:3
    • Category:Alkaline Earth
    • Phase at STP:Solid
    • Electronegativity:1.31 (Pauling scale)

    Key Facts

    Fun Fact #1

    Burns with a bright white light

    Fun Fact #2

    Essential for photosynthesis

    Common Uses

    • Alloys
    • Fireworks
    • Medical applications