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What is the significance of the mass defect in a nucleus? (2023)

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Question: What is the significance of the mass defect in a nucleus? (2023)

Options:

  1. It indicates the stability of the nucleus
  2. It is the mass of the nucleus
  3. It is the mass of the electrons
  4. It has no significance

Correct Answer: It indicates the stability of the nucleus

Exam Year: 2023

Solution: 

The mass defect is the difference between the mass of the nucleus and the sum of the masses of its individual nucleons, indicating the stability and binding energy of the nucleus.

What is the significance of the mass defect in a nucleus? (2023)

Practice Questions

Q1
What is the significance of the mass defect in a nucleus? (2023)
  1. It indicates the stability of the nucleus
  2. It is the mass of the nucleus
  3. It is the mass of the electrons
  4. It has no significance

Questions & Step-by-Step Solutions

What is the significance of the mass defect in a nucleus? (2023)
  • Step 1: Understand that a nucleus is made up of protons and neutrons, which are called nucleons.
  • Step 2: Know that if you add up the masses of all the individual nucleons, you get a certain total mass.
  • Step 3: Measure the actual mass of the nucleus, which is usually less than the total mass of the individual nucleons.
  • Step 4: The difference between the total mass of the nucleons and the actual mass of the nucleus is called the mass defect.
  • Step 5: The mass defect is important because it shows how much mass has been converted into energy when the nucleus was formed.
  • Step 6: This energy is known as binding energy, which helps hold the nucleus together and indicates its stability.
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