What does this expression represent in words 12f+24

think 12f 24 is a part of an electronic configuration. In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s2 2s2 2p6.

think 12f 24 is a part of an electronic configuration.