| 100% | SILICON | 7 | Chemical element of atomic number 14 |
| 79% | BISMUTH | 7 | Chemical element of atomic number 83 |
| 79% | PALLADIUM | 9 | Chemical element of atomic number 46 |
| 79% | IRIDIUM | 7 | Chemical element of atomic number 77 |
| 60% | INDIUM | 6 | Chemical element with atomic number 49 |
| 59% | TUNGSTEN | 8 | Chemical element whose atomic number is 74 |
| 59% | PLUTONIUM | 9 | Chemical element whose atomic number is 94 |
| 59% | FLUORINE | 8 | Chemical element whose atomic number is 9 |
| 59% | RHODIUM | 7 | Chemical element, atomic number 45 |
| 58% | PLATINUM | 8 | Chemical element with atomic number 78, symbol Pt |
| 58% | IODINE | 6 | Chemical element whose atomic number is 53-Across |
| 57% | IRON | 4 | Chemical element whose atomic number is this clue’s number |
| 56% | HYDROGEN | 8 | Chemical element with the atomic number 1 |
| 56% | ARSENIC | 7 | Poisonous chemical element, atomic number 33 |
| 55% | URANIUM | 7 | Chemical element with symbol U, atomic number 92 |
| 54% | CARBON | 6 | Chemical element with symbol C and atomic number 6 |
| 54% | NITROGEN | 8 | Chemical element with symbol N and atomic number 7 |
| 53% | CHLORINE | 8 | A toxic chemical element with the atomic number 17 |
| 48% | BOHRIUM | 7 | Element with atomic number 107 which was named after a Danish physicist who studied the structure of atoms |
| 47% | CURIUM | 6 | Element with atomic number 96 which was named after scientists who were extensively involved in the field of radioactivity |
| 45% | FERMIUM | 7 | Element with atomic the number 100 which was named after an Italian-American pioneer of nuclear physics |
| 45% | MAGNESIUM | 9 | Chemical element number 12 |
| 45% | FLUORINE | 8 | Chemical element number nine |
| 45% | GALLIUM | 7 | Chemical element number 31 |
| 45% | BERYLLIUM | 9 | Chemical element number four |
| 45% | ONE | 3 | Atomic number of hydrogen |
| 45% | TWO | 3 | Atomic number of helium |
| 45% | SEVEN | 5 | Atomic number of nitrogen |
| 45% | EIGHT | 5 | Atomic number of oxygen |
| 45% | THIRTY | 6 | Atomic number of zinc |