Why is the mass of proton less than the mass of neutron?
Asked Vamak Singh
The standard values of masses of proton, neutron and electron are as given below.
| Particle | Charge | Mass (g) |
|---|---|---|
| Proton | +1 | 1.6727 x 10–24 g |
| Neutron | 0 | 1.6750 x 10–24 g |
| Electron | -1 | 9.110 x 10–28 g |
Please refer to http://physics.stackexchange.com/questions/34245/why-is-neutron-heavier-than-proton
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