| Answer | Crossword Clue |
|---|---|
| OXY | Prefix for element No. 8 |
| OZONE | Allotropic form of element No. 8 |
| IODO | Element no. 53, in prefix form |
| SILA | Prefix for an element |
| FERRI | Prefix for a metallic element |
| EKA | Provisional prefix for chemical element. |
| NITR | Prefix for compounds of element 7 |
