The radius of a nucleus with atomic mass number ${\rm{7}}$ is ${\rm{2}}\,\,{\rm{fermi}}$. Find the radius of nucleus with atomic number ${\rm{189}}$.

JEE PHYSICS MCQ: NUCLEI

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The radius of a nucleus with atomic mass number

\mathrm{7}

\mathrm{2}\,\,\mathrm{fermi}

. Find the radius of nucleus with atomic number

\mathrm{189}

View answer and explanation

Correct option: D

\mathrm{6}\,\,\mathrm{fermi}

Option D (6 fermi) is correct because the nuclear radius is proportional to the cube root of the mass number.

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N{e^{22}}

\alpha -