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    Mt

    Meitnerium

    Transition Metal

    Atomic Number: 109 • Atomic Mass: 278.0000 u • Period: 7 • Group: 9

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹⁴ 6d⁷
    Phase: Solid
    Electronegativity: 1.3
    Hassium (Hs)Darmstadtium (Ds)
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    Occurrence

    Meitnerium is found in various natural sources, including minerals, rocks, and the Earth's crust.