Moderate
A certain radioactive nuclide of mass number "X" decays by β-emission and γ-emission to a second nuclide of mass number "Y", the correct relation between "X" and Y" is:
Correct answer: D. Y = X
- A. Y = X - 4
- B. Y =X - 1
- C. Y =X + 1
- D. Y = X
Explanation
According to the given statement, this option is correct. The equation can be written as:AZX → AZ+1Y + 0-1e + γ
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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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