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    Hf

    Hafnium

    Transition Metal

    Atomic Number: 72 • Atomic Mass: 178.4900 u • Period: 6 • Group: 4

    Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d²
    Phase: Solid
    Electronegativity: 1.3
    Lutetium (Lu)Tantalum (Ta)
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    Occurrence

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

    • Earth's crust (5.8 parts per million)
    • Zircon mineral
    • Always found with zirconium