Obtain approx. the ratio of the nuclear radii of the gold isotope `._79Au^(197)` and silver isotope `._47Ag^(107)`.

Explanation

Here,
For `""_(79)Au^(197), A_(1) = 197` and
For `""_(47)Ag^(107), A_(2) -107`
`therefore` Ratio of radii, `R_(1)/R_(2) =(A_(1)/A_(2))^(1/3) = (197/107)^(1/3) =1.23`