5Atomic Structure IsotopesMedium1 mark
The table shows the number of protons, neutrons and electrons in four different particles.
| particle | protons | neutrons | electrons |
|---|---|---|---|
| W | 17 | 18 | 17 |
| X | 16 | 18 | 18 |
| Y | 17 | 20 | 17 |
| Z | 18 | 20 | 18 |
Which two particles have the same chemical properties?