# Nuclear Physics-nucleus diameter

1. May 8, 2006

### prolong199

could someone please leed me in the right direction for calculating an atoms atomic mass given the diameter of its nucleus? thanks

2. May 8, 2006

### Andrew Mason

If you assume that the density of nuclei are about the same and equal to the density of a proton, then all you have to know is the diameter of a proton $_1^1H$
AM

3. May 8, 2006

### prolong199

i found that the diameter of a proton is 1x10^(-15)m with atomic mass 1, but how do i calculate the atomic mass of an atom with diameter 8x10^(-15)m?

4. May 9, 2006

### Andrew Mason

What is the ratio of volume of the larger nucleus to that of the proton? If each nucleon (a proton or neutron) has the same volume, what does that tell you about the number of nucleons in the larger nucleus?

AM

5. May 9, 2006