| Answer | Crossword Clue |
|---|---|
| ION | Type of atom. |
| ANION | Type of atom |
| ISOTONE | Type of atom |
| GRAMION | Type of charged atom. |
| isobare | a type of atom, also ISOBAR |
| isobar | a type of atom, also ISOBARE |
| isobars | ISOBAR, a type of atom, also ISOBARE |
| isobares | ISOBARE, a type of atom, also ISOBAR |
| isotone | a type of atom (the smallest particle of an element) |
| isobaric | pertaining to an isobar (a type of atom, also ISOBARE) |
| isotones | ISOTONE, a type of atom (the smallest particle of an element) |
| MONAD | Atom type |
