Is an electron inside or outside the nucleus?
They are outside the nucleus. They move around the nucleus.
It is in outsiOnly protons and neutrons are in nucleus
Electrons are outside the atomic nucleus.
It does not violate any law of our Universe to have electrons inside the nucleus of an atom. However, the probability of an electron being there is quite small. When you work out a solution for the expected location of an electron in a field of atom's nucleus, you find that an electron is most likely to be found well outside the nucleus. When an electron falls into a nucleus (a type of radioactive decay…
Cause if it were inside the nucleus it wouldn't be an orbit. the electron has to maintain a certain amount of energy to resist the eletro-static force of the opposite charge of the nucleus. The electron isn't exactly a particle but is a standing wave and posses the velocity of light only as a frequency component.