Question

Two nuclei have mass numbers in the ratio 27:125. what is the ratio of their nuclear densities?

Answer 1

Density=mass/volume
D=m/v
v=4/3πr^3
D1/D2=27/127×(r2/r1)^3
We know equation of radius
R=Ro×A^(1/3)
Where Ro is constant
A=mass no.
now,
D1/D2=27/125×A2/A1
D1/D2=27/125×125/27=1