1: Find the mass defect and binding energy for helium nucleus? (Answer: 0.03038 u, 28.3 MeV) 

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2: The mass of nucleus is 13.999234u, calculate the binding energy. (Answer: 104.66 MeV) 

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3: The half life of radioactive nucleus  86226Ra is 1.6 x10³ years. Determine the decay constant. (Answer: 1.4 x 10⁻¹¹ s¹)

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4: Calculate the total energy released if 1 kg of  235U undergoes fission? Taking the disintegration energy per event to be Q = 208 MeV. (Answer: 5.32 x 10⁻²⁶ MeV) 

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5: Determine the mass of `\ ^{6}Li` when it is bombarded by deuteron, disintegrating into two alpha particles by release of 22.3 MeV (0.023940 u) energy. The mass of deuteron is 4.002603 u and that of alpha particle is 4.002603 u. (Answer: 6.01504 u) 

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6: Find the energy released when B-decay changes  234Th into  234Pa. Mass of  234Th = 234.0436 u and  234Pa = 234.0428 u. (Answer: 0.26967 MeV)

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