G-block

Elemental Groups

d-block f-block g-block p-block s-block Subgroups

The G-block elements represent a hypothetical not-yet-observed group of elements beyond the currently-discovered transuranics in which a new electron shell orbital is occupied.

It is not yet known exactly where block G elements will begin on the periodic table; some predict block G will start at element 121 (Unbiunium), others 122 (Unbibium).

See also: Electron configuration