| 100% | MAGNESIUM | 9 | Chemical element number 12 |
| 70% | FLUORINE | 8 | Chemical element number nine |
| 70% | GALLIUM | 7 | Chemical element number 31 |
| 70% | BERYLLIUM | 9 | Chemical element number four |
| 65% | HELIUM | 6 | Chemical element number 2, used to fill balloons |
| 64% | RHODIUM | 7 | Chemical element, atomic number 45 |
| 63% | BISMUTH | 7 | Chemical element of atomic number 83 |
| 63% | PALLADIUM | 9 | Chemical element of atomic number 46 |
| 63% | IRIDIUM | 7 | Chemical element of atomic number 77 |
| 63% | SILICON | 7 | Chemical element of atomic number 14 |
| 63% | INDIUM | 6 | Chemical element with atomic number 49 |
| 62% | HYDROGEN | 8 | Chemical element with the atomic number 1 |
| 62% | TUNGSTEN | 8 | Chemical element whose atomic number is 74 |
| 62% | PLUTONIUM | 9 | Chemical element whose atomic number is 94 |
| 62% | FLUORINE | 8 | Chemical element whose atomic number is 9 |
| 61% | URANIUM | 7 | Chemical element with symbol U, atomic number 92 |
| 61% | PLATINUM | 8 | Chemical element with atomic number 78, symbol Pt |
| 61% | IODINE | 6 | Chemical element whose atomic number is 53-Across |
| 61% | ARSENIC | 7 | Poisonous chemical element, atomic number 33 |
| 60% | CARBON | 6 | Chemical element with symbol C and atomic number 6 |
| 60% | NITROGEN | 8 | Chemical element with symbol N and atomic number 7 |
| 59% | MAGNESIUM | 9 | Atomic number 12, abundant element from stars |
| 59% | IRON | 4 | Chemical element whose atomic number is this clue’s number |
| 57% | CHLORINE | 8 | A toxic chemical element with the atomic number 17 |
| 51% | MAGNESIUM | 9 | Element with atomic number 12 and symbol Mg |
| 48% | BORON | 5 | Chemical element |
| 48% | RADON | 5 | Chemical element |
| 48% | SULFUR | 6 | Chemical element |
| 48% | CARBON | 6 | Chemical element |
| 48% | NEON | 4 | Chemical element |