How to calculate the number of neutrons
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Answer:
Atomic mass = no of proton + no of neutrons
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No of neutrons + no of protons = mass number, A
For eg mass number of He = 4
No of protons of He = 2
Therefore, no of neutrons = 4-2=2
For eg mass number of He = 4
No of protons of He = 2
Therefore, no of neutrons = 4-2=2
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