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    Ta

    Tantalum

    Transition Metal

    Atomic Number: 73 • Atomic Mass: 180.9500 u • Period: 6 • Group: 5

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d³
    Phase: Solid
    Electronegativity: 1.5
    Hafnium (Hf)Tungsten (W)
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    Physical & Chemical Properties

    Physical Properties

    • •Blue-gray metal
    • •High melting point
    • •Excellent conductor
    Melting Point

    3290 K (3016.85 °C, 5462.33 °F)

    Boiling Point

    5731 K (5457.85 °C, 9856.13 °F)

    Density

    16.654 g/cm³

    Electronegativity

    1.5 (Pauling scale)

    Chemical Properties

    • •Highly corrosion resistant
    • •Forms pentavalent compounds
    • •Inert to most chemicals

    Electron Configuration

    1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d³

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