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     EduGorilla 
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    A radioactive nucleus decays according to the following series: 

    If the atomic weight and the atomic number of the parent element A are 180 and 72 respectively, then what will be the atomic number and atomic mass of A4, respectively?

    Options :-

    1. 70, 172
    2. 69, 171
    3. 69, 172
    4. 68, 172
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