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    Yb

    Ytterbium

    Lanthanide

    Atomic Number: 70 • Atomic Mass: 173.0500 u • Period: 6 • Group: 101

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴
    Phase: Solid
    Electronegativity: 1.1
    Thulium (Tm)Lutetium (Lu)
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    Physical & Chemical Properties

    Physical Properties

    • •Silvery-white metal
    • •Soft and malleable
    • •Low melting point for a lanthanide
    Melting Point

    1097 K (823.85 °C, 1514.93 °F)

    Boiling Point

    1469 K (1195.85 °C, 2184.53 °F)

    Density

    6.965 g/cm³

    Electronegativity

    1.1 (Pauling scale)

    Chemical Properties

    • •Forms +2 and +3 oxidation states
    • •Reacts slowly with water
    • •Oxidizes in air

    Electron Configuration

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

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