| Answer | Crossword Clue |
|---|---|
| RAREGAS | Erstwhile name for a "noble" element |
| KAREEM | N.B.A. first name that's Arabic for "noble" or "exalted" |
| helvetium | a superseded name for the element astatine |
| helvetiums | HELVETIUM, a superseded name for the element astatine |
| kurchatovium | a former name for rutherfordium, an artificially produced radioactive transuranic element |
| virginium | a name proposed for chemical element no 87, now called francium |
| kurchatoviums | KURCHATOVIUM, a former name for rutherfordium, an artificially produced radioactive transuranic element |
| virginiums | VIRGINIUM, a name proposed for chemical element no 87, now called francium |
