| Answer | Crossword Clue |
|---|---|
| cuprous | containing univalent copper |
| mercurous | containing univalent mercury |
| sulfonic | containing a certain univalent radical, also SULFO |
| sulfo | containing a certain univalent radical, also SULFONIC |
| alkoxy | containing a univalent radical of alkyl with oxygen |
| aurous | of or containing gold in the univalent state |
| alkoxy | of or containing a univalent organic radical consisting of an alkyl group attached to oxygen |
