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    Po

    Polonium

    Metalloid

    Atomic Number: 84 • Atomic Mass: 209.0000 u • Period: 6 • Group: 16

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁴
    Phase: Solid
    Electronegativity: 2
    Bismuth (Bi)Astatine (At)
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    Physical & Chemical Properties

    Physical Properties

    • •Silvery-gray metal
    • •Unstable
    • •Highly radioactive
    Melting Point

    527 K (253.85 °C, 488.93 °F)

    Boiling Point

    1235 K (961.85 °C, 1763.33 °F)

    Density

    9.196 g/cm³

    Electronegativity

    2 (Pauling scale)

    Chemical Properties

    • •Similar to tellurium and bismuth
    • •Readily dissolves in acids
    • •Oxidizes in air

    Electron Configuration

    1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁴

    Electron configuration describes how electrons are distributed in atomic orbitals, showing how they are arranged in energy levels and subshells.