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    Tl

    Thallium

    Post Transition

    Atomic Number: 81 • Atomic Mass: 204.3800 u • Period: 6 • Group: 13

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p¹
    Phase: Solid
    Electronegativity: 1.62
    Mercury (Hg)Lead (Pb)
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    Applications

    Thallium has a wide range of applications in various industries, including:

    • Rat poison
    • Electronics
    • Medical imaging