WHY THE MASS OF ELECTRONS ARE ASSUMED AS ZERO???
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Answer:
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Yes
Explanation:
because itbis 2000 times less than mass of proton
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this is mainly because in comparison with mass of proton and neutron the mass of electron is very negligible and neutrons and protons have mass 1 and when we add all three the mass of electron comes out to be negligible
its almost 1/1837 mass of proton
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