Which row in the table correctly gives the relative mass of a proton, a neutron, and an electron?
| Proton | Neutron | Electron | |
|---|---|---|---|
| A | 1 | 11840\displaystyle \frac{1}{1840}18401 | 1 |
| B | 11840\displaystyle \frac{1}{1840}18401 | 1 | 1 |
| C | 1 | 1 | 11840\displaystyle \frac{1}{1840}18401 |
| D | 1 | 1 | 1 |
Row A
Row B
Row C
Row D
114 exam-style questions on CIE IGCSE Physics 5.1.1a Structure of the atom and ions. Each one has a worked solution and a mark scheme showing where the marks go.