| Answer | % Correct |
|---|---|
| Carbon-12 | 40%
|
| Hydrogen-2 | 35%
|
| Nitrogen-14 | 35%
|
| Carbon-13 | 25%
|
| Copper-63 | 15%
|
| Lead-208 | 15%
|
| Lithium-6 | 15%
|
| Beryllium-9 | 10%
|
| Chlorine-35 | 10%
|
| Phosphorus-31 | 10%
|
| Potassium-41 | 10%
|
| Sodium-23 | 10%
|
| Francium-223 | 5%
|
| Gallium-71 | 5%
|
| Iridium-193 | 5%
|
| Rubidium-85 | 5%
|
| Arsenic-75 | 0%
|
| Krypton-80 | 0%
|
| Praseodymium-141 | 0%
|
| Thulium-169 | 0%
|