speed and direction of the electron size of the electron and the neutron direction and strength of the electron energy and the attraction of the nucleus
I gave my students this multiple choice question: What two factors determine the location of an electron around the nucleus of the atom?

Only one answer is correct among these 4 choices:
- speed and direction of the electron
- size of the electron and the neutron
- direction and strength of the electron
- energy and the attraction of the nucleus

Could you tell me which one is correct?

energy and the attraction of the nucleus