It is exceedingly rare for groups such as H− (hydrides) and R3C− (alkyl anions, R=alkyl or H) to depart with a pair of electrons because of the instability of these bases.
Izuzetno je retko za grupe kao što je H− (hidridi) i R3C− (alkil anjoni, R=alkil ili H) da odu sa parom elektrona zbog nestabilnosti tih baza.