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18 October, 10:19

What's the molar mass of Lead-208

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  1. 18 October, 11:24
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    Lead is a basic metal and almost 11 isotopes of Lead are reported. The isotopes with greater natural abundance are as follow;

    1) ²⁰⁸Pb with abundance 52.4 %

    2) ²⁰⁶Pb with abundance 24.1 %

    3) ²⁰⁷Pb with abundance 22.1 %

    4) ²⁰⁴Pb with abundance 1.4 %

    Molar mass of ²⁰⁸Pb:

    Molar mass of any element is the total of number of protons, neutrons and electrons.

    As, number of protons in Lead are 82 then in ²⁰⁸Pb isotope number of neutrons are ...

    # of Neutrons = M. mass - # of protons

    # of Neutrons = 208 - 82

    # of Neutrons = 126

    Result:

    Molecular Mass of Lead (²⁰⁸Pb) is 208 amu.

    # of Protons in ²⁰⁸Pb = 82

    # of Neutrons in ²⁰⁸Pb = 126
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