When a nucleus emits beta particle, its mass number remains constant but charge number increases by:
Correct answer: D. 1
- A. 2
- B. 3
- C. 4
- D. 1
Explanation
Explanation: Beta decay involves the transformation of a neutron into a proton (or vice versa). This increases the atomic number (charge number) by 1, while the mass number remains the same.
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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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