| Rating | Solver | Clue |
|---|---|---|
| MOLECULE | Two or more atoms | |
| ISOTOPE | One of two or more atoms with the same atomic number that contain different numbers of neutrons | |
| BICHLORIDE | A compound consisting of two atoms of chlorine with one or more atoms of another element; -- called also dichloride. | |
| NORMAL | Denoting that series of hydrocarbons in which no carbon atom is united with more than two other carbon atoms; as, normal pentane, hexane, etc. Cf. Iso-. | |
| RADICAL | Specifically, a group of two or more atoms, not completely saturated, which are so linked that their union implies certain properties, and are ... | |
| IMIDE | ...p; specif., a compound of one or more acid radicals with the imido group, or with a monamine; hence, also, a derivative of ammonia, in which two... | |