Mass numbers of two nuclei are in the ratio of 4: 3 . Their nuclear...

Radius of nucleus $R = {R}_{0}A\dfrac{1}{3}$

Density of nucleus \left(ρ\right) = \dfrac{Massofnucleus}{volumeofnucleus}$</p><p>$ρ = \dfrac{m \times A}{\dfrac{4}{3}\pi{R}^{3}}$Where$m$: mass of proton or neutron and$A$: mass number.</p><p>$⇒ ρ = \dfrac{m \times A}{\dfrac{4}{3}\pi{R}_{0} 3 A}$</p><p>$⇒ ρ ∝ {A}^{0}$</p><p>Hence, density of nucleus is independent of mass number.</p><p>Therefore, the ratio is$1: 1.