Which of the following parts of the Bohr atomic model of hydrogen turned out to be false?
1) The line spectrum of hydrogen is produced when photons are emitted having energies which are differences between quantum energy levels.
2) The energy of the electron is quantized.
3) An electron moves in one of several fixed circular orbits around the nucleus.
4) The energy of the electron is inversely proportional to the square of the quantum number n.
