The promise of nuclear power A . This amount of energy could satisfy the present consumption of energy worldwide for trillions of years. However, we can exploit what nature has given us - namely radioactive materials such as uranium. The structure of atomic nuclei A . 0.005372 amu 1 .
Neutrons are similar to protons but possess no electronic charge and are slightly heavier.
Both the proton and neutron are about 1836 times as massive as the electron. Most of the mass of an atom resides in the nucleus. If Autzen stadium were an atom, then its nucleus would be the size of a pea located at the 50 yard line. Mass units 1 . The magnitude of the charge on an electron and a proton is 1.602 x 10 -19 C ii .