| Answer | Crossword Clue |
|---|---|
| METAL | Erbium or cobalt |
| RAREEARTH | Erbium or terbium |
| ELEMENT | Erbium or terbium |
| RARE | Like erbium or terbium |
| RARE | Like terbium or erbium |
| MAGNETICELEMENT | Iron or cobalt |
| METAL | Cobalt or copper |
| METAL | Copper or cobalt |
| METAL | Mercury or cobalt |
| METAL | Thorium or cobalt. |
| CAR | Cobalt or Neon |
| CAR | Cobalt or Neon, e.g. |
| ISOTOPE | Carbon-13 or cobalt-60 |
| ISOTOPE | Carbon 12 or cobalt 60 |
| ISOTOPE | Carbon 13 or cobalt 60 |
