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    Dy

    Dysprosium

    Lanthanide

    Atomic Number: 66 • Atomic Mass: 162.5000 u • Period: 6 • Group: 101

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁰
    Phase: Solid
    Electronegativity: 1.22
    Terbium (Tb)Holmium (Ho)
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    Physical & Chemical Properties

    Physical Properties

    • •Silvery-white metal
    • •High magnetic susceptibility
    • •Relatively soft
    Melting Point

    1680 K (1406.85 °C, 2564.33 °F)

    Boiling Point

    2840 K (2566.85 °C, 4652.33 °F)

    Density

    8.55 g/cm³

    Electronegativity

    1.22 (Pauling scale)

    Chemical Properties

    • •Forms trivalent compounds
    • •Reacts slowly with water
    • •Dissolves in acids

    Electron Configuration

    1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁰

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