F-block (original) (raw)
| Elemental Groups |
|---|
| d-block f-block g-block p-block s-block Subgroups actinide lanthanide |
F-block (for fundamental) elements consist of the lanthanide and actinide series. They have two _s_-electrons in their outer (n) electron shell and _f_-electrons in their inner (_n_-2) shell. Some also have _d_-electrons in their semi-inner (_n_-1) shell.
See also: Electron configuration