| Answer | Crossword Clue |
|---|---|
| ION | It may be positive or negative |
| ION | It may be negative or positive |
| ANODES | They may be positive or negative |
| pion | a meson that is a combination of up and down quarks and antiquarks, that may be positive, negative, or neutral, and that has a mass about 270 times that of the electron |
| pionic | a meson that is a combination of up and down quarks and antiquarks, that may be positive, negative, or neutral, and that has a mass about 270 times that of the electron |
| ION | It may be positive |
