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Assertion: The whole mass of the atom is...

Assertion: The whole mass of the atom is concentrated in the nucleus.
Reason: The mass of a nucleus can be either less than or more than the sum of the masses of nucleons present in it.

A

S1 only

B

S1 and S4

C

S2, S3 and S4

D

S1 and S3

Text Solution

Verified by Experts

The correct Answer is:
D
No. of nucleons = No. of protons + No. of neutrons = Mass number For all nuclei have masses that are less than the sum of the masses of its constituents.
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Assertion:The whole mass of the atom is concentrated in the nucleus. Reason:The whole mass of the atom is concentrated in the nucleus Reason:The mass of a nucleus can be either less than or more than the sum of the masses of nucleons present in it.

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