Binding Energy and Nuclear Stability
When bonds are formed between nucleons, the energy released is called the binding energy. This means that the mass of the nucleus is less than the mass of the separate nucleons. The relationship between this mass difference or mass defect is that energy released E = Δmc2

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Key terms in this lesson
- nuclear fission
- The splitting of a large, unstable nucleus into two smaller nuclei, and usually some neutrons, releasing energy.
More in Nuclear Energy
- Mass-Energy Equivalence
- Strong Nuclear Force
- Quantum Tunnelling
- Nuclear Fission
- Nuclear Fusion
- Nuclear Reactors
- Safety
All 8 lessons in Nuclear Energy · All OCR A-level Physics topics