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5 April, 20:56

Use the periodic table to determine the electron configuration of dysprosium (Dy) and americium (Am) in noble-gas notation.

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  1. 5 April, 23:27
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    Dysprosium (Dy) belongs to the Lanthanide series, it has an atomic number of 66

    Nobel gas electron configuration can be represented in terms of Xenon (Xe) which in turn has an atomic number 54

    Dy = [Xe] 4f¹⁰6s²

    Americium (Am) belongs to the actinide series, it has an atomic number of 95

    Nobel gas electron configuration can be represented in terms of Radon (Rn) which in turn has an atomic number 86

    Am = [Rn] 5f⁷7s²
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