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    Cf

    Californium

    Actinide

    Atomic Number: 98 • Atomic Mass: 251.0000 u • Period: 7 • Group: 102

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹⁰
    Phase: Solid
    Electronegativity: 1.3
    Berkelium (Bk)Einsteinium (Es)
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    Physical & Chemical Properties

    Physical Properties

    • •Silvery appearance
    • •Highly radioactive
    • •Strong neutron emitter
    Melting Point

    1173 K (899.85 °C, 1651.73 °F)

    Boiling Point

    1743 K (1469.85 °C, 2677.73 °F)

    Density

    15.1 g/cm³

    Electronegativity

    1.3 (Pauling scale)

    Chemical Properties

    • •Forms Cf³⁺ ions in solution
    • •Forms halides and oxides
    • •Similar to dysprosium chemically

    Electron Configuration

    1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹⁰

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