In Nuclear Physics the mass defect is referred to _.
Correct answer: C. The difference in masses of free nuclear constituent and bonded nucleus
- A. The difference in masses of free neutrons and protons.
- B. The difference in masses of free neutrons and bonded nucleus
- C. The difference in masses of free nuclear constituent and bonded nucleus
- D. Difference between atomic mass and atomic number
Explanation
When we measure the nuclear masses and compare them with the masses of the constituent nucleons in free states, the mass of the nucleus is always less than the mass of the constituent nucleons. This difference in mass, deltam, is known as the mass defect. Sindh Textbook for Class XII P313
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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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