History, asked by navnathkrantikar, 1 month ago

प्रत्र:५. अ) (वाक्यात उपयोग धडा शिकणे. अर्थ​

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Answered by llGangsterBachchill
3

Mass number, in nuclear physics, the sum of the numbers of protons and neutrons present in the nucleus of an atom.

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