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The mass of proton is 1.0073 u and that of neutron is 1.0087 u (u = atomic mass unit). The binding energy of ²H is:

1. 0.061 u
2. 0.0305 j
3. 0.0305 erg
4. 28.4 MeV

Correct answer: 28.4 MeV

Solution

The binding energy of ²H can be calculated using the mass defect and converting it to energy using Einstein's equation (E=mc²). The mass defect is approximately 0.0024 u, which corresponds to 28.4 MeV when converted. Thus, the correct answer is 28.4 MeV.

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