| A | B |
|---|
| This particle has a neutral charge and is located within the nucleus | Neutron |
| The term that describes the sum of the protons and neutrons in one atom | Atomic weight |
| This particle carries a negative charge and encircles the nucleus in orbit | Electron |
| This particle carries a positive charge and is found inside the Nucleus | Proton |
| The nuclear particle involved in bonding | Electron |
| An unstable isotope | Radioisotope |
| The term that describes the number of protons in the nucleus | Atomic number |
| The nuclear particle that determines the atomic number | Proton |
| In each atom the number of these particles is equal to the number of protons | Electrons |
| A different form of the same element (same atomic number but different atomic weight) | Isotope |
