- A univalent radical, PH4, derived from phosphine.
- the tetravalent positively-charged phosphorus cation R4P+
- The hypothetical radical PH4, analogous to ammonium, and considered the nucleus of particular derivatives of phosphine.
- A hypothetical element, analogous to ammonium, created because of the union of four atoms of hydrogen and one of phosphorus (PH4).
Sentence for "phosphonium"
- When cotton sleepwear has been treated…
Form for "phosphonium"