Example image of eyePlorer eyePlorer map for 'Aufbau principle': Atom Electron configuration German language Ion Molecule Electron orbital Electron Energy level Erwin Madelung Pauli exclusion principle Degenerate orbital List of Hund's rules Spin (physics) Atomic nucleus Neutron Proton Chromium Copper Niels Bohr Wolfgang Pauli Physics Quantum mechanics Orbital eccentricity Jan C. A. Boeyens F-block D electron count Hund's rule of maximum multiplicity Scientific phenomena named after people Hydrogen-like atom Spin states (d electrons) Extension of the periodic table beyond the seventh period MO diagram Ligand Periodic table Electron shell Crystal field theory List of German expressions in English