Question

If r₁& r₂ are the radii of the atomic nuclei of mass numbers 64 & 125 respectively. Then ratio $\left( \frac{r_{1}}{r_{2}} \right)$ is-

• A. $\frac{64}{125}$
• B. $\sqrt{\frac{64}{125}}$
• C. $\frac{5}{4}$
• D. $\frac{4}{5}$

Answer 1

Answer: (D)

$\frac{4}{5}$

Answer 2

use r = r₀ (1)^1/3 ̃