The ratio of radii of nuclei of two atoms of elements of atomic mass numbers 27 and 64 is

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Professor PC Thomas Classes · Answer

(a) : Nuclear radius, $R=R_0 A^{1 / 3}$ where $R_0$ is a constant and $A$ is the mass number \ $ \frac{R_{\mathrm{Al}}}{R_{\mathrm{Cu}}}=\frac{(27)^{1 / 3}}{(64)^{1 / 3}}=\frac{3}{4} $