The difference between the mass of a nucleus and the combined mass of its nucleons is :

zero

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positive

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negative

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zero, positive or negative

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Solution

The correct option is A negative
We know that mass defect $=$ combined mass of nucleons $-$ mass of the nucleus.
Since mass defect is always positive quantity so the difference of nucleus and the combined mass of its nucleons will be negative. The combined mass is greater than the mass of nucleus.

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Q. Which of the following is a wrong description of binding energy of a nucleus?
(a) It is the energy required to break a nucleus into its constituent nucleons.
(b) It is the energy made available when free nucleons combine to form a nucleus.
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The difference between the mass of a nucleus and the combined mass of its nucleons is :

The correct option is A negativeWe know that mass defect = combined mass of nucleons − mass of the nucleus.Since mass defect is always positive quantity so the difference of nucleus and the combined mass of its nucleons will be negative. The combined mass is greater than the mass of nucleus.

The correct option is A negative
We know that mass defect $=$ combined mass of nucleons $-$ mass of the nucleus.
Since mass defect is always positive quantity so the difference of nucleus and the combined mass of its nucleons will be negative. The combined mass is greater than the mass of nucleus.