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  4. The ratio of the nuclear radii of the gold isotope 79197Au and silver isotope 47107Ag is

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Q. The ratio of the nuclear radii of the gold isotope $_{79}^{197}Au$ and silver isotope $_{47}^{107}Ag$ is

Nuclei

Solution:

Here, $A_{1}=197$ and $A_{2}=107$
$\therefore \frac{R_{1}}{R_{2}}=\left(\frac{A_{1}}{A_{2}}\right)^{1/ 3}=\left(\frac{197}{107}\right)^{1 /3}=1.225$