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    Au

    Gold

    Transition Metal

    Atomic Number: 79 • Atomic Mass: 196.9700 u • Period: 6 • Group: 11

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s¹ 4f¹⁴ 5d¹⁰
    Phase: Solid
    Electronegativity: 2.54
    Platinum (Pt)Mercury (Hg)
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    Physical & Chemical Properties

    Physical Properties

    • •Yellow color
    • •Extremely malleable and ductile
    • •Excellent conductor
    Melting Point

    1337.33 K (1064.18 °C, 1947.52 °F)

    Boiling Point

    3129 K (2855.85 °C, 5172.53 °F)

    Density

    19.3 g/cm³

    Electronegativity

    2.54 (Pauling scale)

    Chemical Properties

    • •Resistant to oxidation
    • •Dissolved by aqua regia
    • •Forms alloys with many metals

    Electron Configuration

    1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s¹ 4f¹⁴ 5d¹⁰

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