Why are electrons so far away from the nucleus of an atom?
Due to opposing charges on an electron and proton (nucleus) the electrons swim in defined orbits around the nucleus and do not fall down in the nucleus.
The total energy of an electron in the nth orbit of a hydrogen atom is given by the formula En = -13.6 eV/n2. What does the negative energy for an electron indicate?
The force experienced by an electron towards the nucleus is and away from the nucleus is .