Spatial and Angular Momentum Numbers
To completely describe an electron in an atom, four quantum numbers are needed: energy, angular momentum, magnetic moment and spin.
Read more about this topic: Quantum Number
Famous quotes containing the word numbers:
“Our religion vulgarly stands on numbers of believers. Whenever the appeal is made—no matter how indirectly—to numbers, proclamation is then and there made, that religion is not. He that finds God a sweet, enveloping presence, who shall dare to come in?”
—Ralph Waldo Emerson (1803–1882)