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What is the mass defect of a nucleus? (2019)

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Question: What is the mass defect of a nucleus? (2019)

Options:

  1. The difference between the mass of the nucleus and the sum of the masses of its individual nucleons
  2. The mass of the nucleus itself
  3. The mass of the electrons surrounding the nucleus
  4. The mass of the nucleus in a different state

Correct Answer: The difference between the mass of the nucleus and the sum of the masses of its individual nucleons

Exam Year: 2019

Solution: 

The mass defect is the difference between the mass of the nucleus and the sum of the masses of its individual nucleons, which accounts for the binding energy.

What is the mass defect of a nucleus? (2019)

Practice Questions

Q1
What is the mass defect of a nucleus? (2019)
  1. The difference between the mass of the nucleus and the sum of the masses of its individual nucleons
  2. The mass of the nucleus itself
  3. The mass of the electrons surrounding the nucleus
  4. The mass of the nucleus in a different state

Questions & Step-by-Step Solutions

What is the mass defect of a nucleus? (2019)
  • Step 1: Understand that a nucleus is made up of protons and neutrons, which are called nucleons.
  • Step 2: Find the total mass of all the individual nucleons (protons and neutrons) if they were separate.
  • Step 3: Measure the actual mass of the nucleus as a whole.
  • Step 4: Calculate the mass defect by subtracting the actual mass of the nucleus from the total mass of the individual nucleons.
  • Step 5: Recognize that this mass defect is related to the binding energy, which is the energy that holds the nucleus together.
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