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Calculate the binding energy of an alpha particle from the following data: `mass of _1^1H atom = 1.007825 u` mass of neutron `= 1.008665 u` mass of `_4^2He atom = 4.00260 u`. Take `1 u = 931 MeV c^(-2)` |
Answer» The alpha particle contains`2` protons and `2` neutrons. The binding energy is `B =(2 xx 1.007826 u + 2 xx 1.008665 u -4.00260 u)c^(2)` `=(0.03038 u)c^(2)` `=0.03038 xx 931 MeV =28.3 MeV`. |
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