| Answer | Crossword Clue |
|---|---|
| MERC | Heavy element: Abbr. |
| LEAD | Heavy element |
| OSMIUM | Heavy metallic element |
| RADON | Heavy, gaseous element. |
| RADON | Heavy, gaseous element |
| CAT | Element of heavy rain |
| IRIDIC | Of a heavy metallic element. |
| OSMIUM | Heavy element used in alloys |
