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What is the mass defect in a nucleus?

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Question: What is the mass defect in a nucleus?

Options:

  1. The difference between the mass of the nucleus and the sum of the masses of its nucleons
  2. The mass of the nucleus itself
  3. The mass of the electrons surrounding the nucleus
  4. The mass of the binding energy

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

Solution: 

The mass defect is the difference between the mass of the nucleus and the sum of the masses of its individual nucleons.

What is the mass defect in a nucleus?

Practice Questions

Q1
What is the mass defect in a nucleus?
  1. The difference between the mass of the nucleus and the sum of the masses of its nucleons
  2. The mass of the nucleus itself
  3. The mass of the electrons surrounding the nucleus
  4. The mass of the binding energy

Questions & Step-by-Step Solutions

What is the mass defect in a nucleus?
  • Step 1: Understand that a nucleus is made up of protons and neutrons, which are called nucleons.
  • Step 2: Find out the mass of each individual nucleon (protons and neutrons) when they are separate.
  • Step 3: Add up the masses of all the individual nucleons to get a total mass.
  • Step 4: Measure the actual mass of the nucleus as a whole.
  • Step 5: Subtract the total mass of the individual nucleons from the actual mass of the nucleus.
  • Step 6: The result is called the mass defect, which shows how much mass is 'lost' when nucleons come together to form a nucleus.
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