The table shows the numbers of protons and neutrons in four different atoms, W, X, Y and Z.
| Atom | Protons | Neutrons |
|---|---|---|
| W | 7 | 7 |
| X | 6 | 8 |
| Y | 7 | 8 |
| Z | 8 | 8 |
Which two atoms are isotopes of the same element?
Atoms W and X
Atoms Y and Z
Atoms X and Z
Atoms W and Y
101 exam-style questions on OCR GCSE Chemistry 1.2 Atomic structure, covering 1.2.1 Development of the atomic model, 1.2.2 The nuclear model and the size of atoms, and 1.2.3 Subatomic particles in atoms and ions. Each one has a worked solution and a mark scheme showing where the marks go.