Hydrogen atom Angular momentum 2 Quantum chemistry 2 Affine connection 1 Algebra 1 Classical mechanics 1 Dirac equation 1 Molecular orbital theory 1 Molecular symmetry 1 Nuclear detectors and radioactivity 1 Nuclear fission and shells 1 Pauli algebra 1 Perturbation theory 1 Physics 1 Polyelectronic atoms 1 Quantum mechanics 1 Quantum theory 1 Schrodinger equation 1 Theory of photon 1