Question

What is the approximate radius R of 208 82Pb? Express your answer in meters to two significant figures. R = 7.10x10-15 mAssuming that each nucleus is roughly spherical and that its mass is roughly equal to A (in atomic mass units u), what is the density of a nucleus with nucleon number A?Express your answer in terms of A, R0, .

Answer 1

Answer:

Using

Radius = RoA^ 1/3

And we are given

To= 1.42 fm A= 208

So R = 1.4E-15 x 208^1/3

Radius= 8.4fm

But we know that density =mass/volume

So D = 3/4 x A/ πR³