Question

The ratio of the mass densities of nuclei of ⁴⁰Ca and ¹⁶O is close to ______.

Options

• 1

• 0.1

• 5

• 2

Answer 1

The ratio of the mass densities of nuclei of ⁴⁰Ca and ¹⁶O is close to 1.

Explanation:

Nuclear radius (R) = R₀A^1/3, so volume V ∝ A.

Density = `"mass"/"volume" prop A/A` = constant

Hence, all nuclei have nearly the same density, so the ratio is 1.