The mass of proton, neutron, and helium nucleus are respectively \( 1.0073 \, \text{u}, 1.0087 \, \text{u}, \, 4.0015 \, \text{u} \). The binding energy of the helium nucleus is:
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The binding energy of a nucleus can be computed by first calculating the mass defect (the difference between the total mass of nucleons and the mass of the nucleus) and then converting it to energy using the relation \( 1 \, \text{u} = 931.5 \, \text{MeV/c}^2 \).