| 100% | XENON | 5 | The only chemical element starting with X |
| 76% | XENON | 5 | Only chemical element that starts with X |
| 73% | XENON | 5 | The only chemical element with a name that begins with an x |
| 72% | XENON | 5 | Only chemical element whose name starts with an x |
| 64% | VANADIUM | 8 | The only chemical element to begin with a V |
| 64% | TIN | 3 | The only chemical element with a three-letter name |
| 50% | VANADIUM | 8 | Only chemical element whose name begins with V |
| 50% | TIN | 3 | Only chemical element with a three-letter name |
| 49% | TIN | 3 | The only three-letter chemical element |
| 49% | NEON | 4 | Chemical element with the symbol Fe |
| 49% | SODIUM | 6 | Chemical element with the symbol Na |
| 49% | TIN | 3 | Chemical element with the shortest name |
| 49% | TITANIUM | 8 | Chemical element with the symbol Ti |
| 49% | URANIUM | 7 | Chemical element with the symbol U |
| 49% | MANGANESE | 9 | Chemical element with the symbol Mn |
| 49% | CALCIUM | 7 | Chemical element with the symbol Ca |
| 49% | POTASSIUM | 9 | Chemical element with the symbol K |
| 49% | HYDROGEN | 8 | Chemical element with the abbreviation H |
| 49% | BORON | 5 | Chemical element with the symbol "B" |
| 49% | CARBON | 6 | Chemical element with the symbol C |
| 49% | TUNGSTEN | 8 | Chemical element with the symbol W |
| 49% | MAGNESIUM | 9 | Chemical element with the symbol Mg |
| 49% | IRON | 4 | Chemical element with the symbol Fe |
| 49% | BORON | 5 | Chemical element with the symbol B |
| 48% | XENON | 5 | Only element that starts with an "X" |
| 48% | HYDROGEN | 8 | Chemical element with the atomic number 1 |
| 47% | TICTACTOETACTIC | 15 | Starting with an X in the corner, say? |
| 46% | XENON | 5 | Chemical element that starts with an 8-point Scrabble letter |
| 46% | IOWA | 4 | The only US state whose name starts with two vowels |
| 46% | ZAGREB | 6 | Only national capital starting with the letter Z |