By 1799 the number of Martha Washington's dower slaves had grown to 153; George Washington owned 124 people, and at least a dozen Washington-owned slaves intermarried.
Hund's rule of maximum multiplicity is a rule based on observation of atomic spectra, which is used to predict the ground state of an atom or molecule with one or more open electronic shells.
The aufbau principle is a method for determining the electron  configuration of an element. It shows how the various orbitals must  be filled in correct sequence to show how â¦ ionization may occur. For  selenium, the correct aufbau sequence is [AR] 4s2 3d10 4p4.