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R atomic mass n atomic no. Same ?

    • Posted by Prisha Gupta 5 years, 7 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Meghna Thapar 5 years, 6 months ago

    • The  number  of  protons  present  in  the  nucleus  of  an  atom  is  the  atomic  number  of  that  atom.

     

    • Atomic  mass  number  is  defined as  the  sum  of  the  number  of protons and  neutrons  contained  in  the nucleus of an atom of that element.

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