THEORY OF XRF - Purdue University

non-charged neutrons, surrounded by electrons grouped in shells or orbitals. The innermost shell is called the K-shell, followed by L-shells, M-shells etc. as one moves outwards. The L-shell has 3 sub-shells called L I, L II and L III. The M-shell has 5 subshells M I, M II, M III, M IV and M V. The K-shell can contain 2 electrons, the L-shell 8 ...

  Shell, Orbitals, Subshells, Sub shells