Obtain approx. the ratio of the nuclear radii of the gold isotope `._79Au^(197)` and silver isotope `._47Ag^(107)`.
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Here , `A_1=197 and A_2=107` `(R_1)/(R_2)=((A_1)/(A_2))^(1//3)=(197/107)^(1//3)=1.225`
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