Question

If mass no. Is the sum of protons and neutrons then why 1amu = 1/12 of carbon12 ?

Answer 1

answer is 6 amusing
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Answer 2

Hey mate here is your answer.....☺☺✌☺☺

A C-12 atom consisting of 6 protons, 6 neutrons and 6 electrons has lower mass than the sums of the isolated particles. Therefore 1 amu is less than a proton or neutron. It is important to note that the atomic mass number, the sum of protons and neutrons is just that; it is not an atomic mass.

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