Noun
electride (plural electrides)
(chemistry) An ionic compound in which an electron is the anion.
The conducting forms can be considered as Ln III electride compounds where the electron is delocalised into a conduction band, Ln 3+ (X − ) 2 (e − ). Source: Internet
They are either conventional salts or are Ln(III) " electride "-like salts. Source: Internet
Ytterbium metal behaves similarly to europium metal and the alkaline earth metals, dissolving in ammonia to form blue electride salts. Source: Internet