| compound | 6 |
| electronegativity | 2 |
| isotope | 1 |
| toothpaste | 0.43 |
| react with hydrogen | 0.37 |
| combine with calcium | 0.35 |
| displace chlorine | 0.25 |
| displace bromine | 0.25 |
| combine with krypton | 0.25 |
| combine with xenon | 0.25 |
| combine with radon | 0.25 |
| strengthen tooth | 0.25 |
| strengthen bone | 0.25 |
| the most electronegativ… | 0.61 |
| the chemical element | 0.43 |
| halogen | 0.25 |
| poisonous diatomic gas | 0.16 |
| derived | 0.63 |
| added to the water | 0.46 |
| substituted for hydrogen | 0.33 |
| formed in star | 0.25 |
| used as propellant | 0.21 |
| absorbed | 0.16 |