InterviewSolution
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InterviewSolution
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Helium atom has an atomic mass of 4 u and two protons in its nucleus |
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Answer» s of an atom is given by the SUM of the masses of protons and neutrons PRESENT in the nucleus. Since HELIUM atom has a atomic MASS of 4 u and it has TWO protons. Two protons contribute 2 u to atomic mass. Hence, it must contain 2 neutrons. |
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