What is the role of the strong nuclear force in a nucleus?
Correct answer: B. It binds nucleons together against Coulomb repulsion
- A. It repels protons to prevent collapse
- B. It binds nucleons together against Coulomb repulsion
- C. It causes radioactive decay
- D. It balances the gravitational force
Explanation
The strong nuclear force, a short-range attractive force, binds protons and neutrons (nucleons) together, overcoming the repulsive electromagnetic force between protons, thus maintaining nuclear stability.
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Atomic nuclei contain protons and neutrons, with nuclear size, mass defect and binding energy describing their stability. The work covers alpha, beta and gamma decay, decay equations, half-life and decay rate, along with radiation safety and medical applications such as imaging, radiotherapy and tracers.
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