I need help with question one and I need question three to be checked please?
1.How does the mass of a nucleon compare with the mass of an electron?
3.Why do protons in a very large nucleus have a greater chance of flying apart by electrical repulsion?
-I think its because the nucleus is held together by a short range force called the "strong" or nuclear force. Then as more and more protons are added to the nuclues the electromagnetic repulsion between the protons becomes so strong that neutrons are needed to add to the nuclear force without adding and electromagnectic repulsion.
Neutrons and protons weigh approximately 2000 as much as an electron (1/1837).
3 looks ok to me except the last sentence sounds sketchy to me. As more protons are packed into the nucleus, more neutrons are needed to provide the glue to hold it together.