angular momentum quantum number A quantum number that labels the subshells of an atom. Sometimes called the orbital angular momentum quantum number and designated by the letter l, this quantum number dictates orbital shape. It can take on values from 0 to n-1 within a shell with principal quantum number n. Related categories ATOMIC AND NUCLEAR PHYSICS PARTICLE PHYSICS PHYSICAL CHEMISTRY Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |