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    Am

    Americium

    Actinide

    Atomic Number: 95 • Atomic Mass: 243.0000 u • Period: 7 • Group: 102

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f⁷
    Phase: Solid
    Electronegativity: 1.3
    Plutonium (Pu)Curium (Cm)
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    Physical & Chemical Properties

    Physical Properties

    • •Silvery-white metal
    • •Highly radioactive
    • •More malleable than uranium
    Melting Point

    1449 K (1175.85 °C, 2148.53 °F)

    Boiling Point

    2880 K (2606.85 °C, 4724.33 °F)

    Density

    13.69 g/cm³

    Electronegativity

    1.3 (Pauling scale)

    Chemical Properties

    • •Forms Am³⁺ ions in solution
    • •Multiple oxidation states (+2 to +7)
    • •Reacts readily with oxygen

    Electron Configuration

    1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f⁷

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