Question

What is the mass defect?
A. It is seen as an increase in the masses of daughter elements.
B. It is identified as a missing line on an absorption spectrum.
O C. It is the difference between measured mass and average isotope
mass.
D. It is the difference between nuclear mass and the mass of its
components.
SUB

Answer 1

Mass defect is define as the difference between nuclear mass and the mass of its components.

What is mass defect?

As the name suggested that defect in mass of any substance given idea about the mass defect and it will be define as the difference between the atomic mass of an atom and sum of the masses of all constitute particles present inside the nucleus.

• Mass of daughter nuclei will take in consideration when only nuclear reaction takes place.
• Missing line of absorption is not related to the mass, else it is related to the concentration.
• Difference between measured mass and average isotope is not considered in mass defect because it is calculated for the individual atom not for all isotopes of that atom.

Hence it is the difference between nuclear mass and the mass of its

components.

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