Four statements are given (A is mass number) : A. The volume of a nucleus is proportional to \({A}^{1/3}\). B. The volum…
Four statements are given (A is mass number) :
A. The volume of a nucleus is proportional to \({A}^{1/3}\).
B. The volume of a nucleus is proportional to A.
C. The difference in mass of an atom and its nucleus is called the mass defect.
D. The difference in mass of a nucleus and its constituents is called the mass defect.
Choose the correct answer from the options given below :
B and D are true, but A and C are false
A. False, because \(\mathrm{V} \propto \mathrm{A}\left[\mathrm{R} \propto \mathrm{A}^{1 / 3}\right]\)
B. True, because \(\mathrm{V} \propto \mathrm{A}\)
C. False, because
(Mass of atom - Mass of nucleus)
\(\approx\) total mass of electrons
D. True, because
\(\Delta m=\) (Total mass of constituents - Mass of a nucleus)
\(\Rightarrow-\Delta \mathrm{m}=\) Mass of nucleus - Total mass of constituents)
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