Why atomic shells are named k,l,m,n?
Electron shell From Wikipedia, the free encyclopedia (Redirected from Shell Atomic Model) Jump to: navigation, search In atomic physics, an electron shell, also known as a main energy level, is a group of atomic orbitals with the same value of the principal quantum number n. Electron shells are made up of one or more electron subshells, or sublevels, which have two or more orbitals with the same angular momentum quantum number l. Electron shells make up the electron configuration of an atom. It can be shown that the number of electrons that can reside in a shell is equal to 2n2. The existence of electron shells was first observed experimentally in Charles Barkla’s and Henry Moseley’s X-ray absorption studies. Barkla labelled them with the letters K, L, M, etc. (The origin of this terminology was alphabetic. K and L were originally called B and A, but were later renamed to leave room for hypothetical spectral lines that were never discovered.) These letters were later found to correspon
