A neutral atom has a nucleus with the properties shown.
| Relative mass | Relative charge |
|---|---|
| 34 | +16 |
Which row gives the numbers of protons, neutrons and electrons in the atom?
16 protons, 34 neutrons and 16 electrons
17 protons, 17 neutrons and 16 electrons
18 protons, 16 neutrons and 18 electrons
16 protons, 18 neutrons and 16 electrons
103 exam-style questions on Edexcel GCSE Physics 6.1 Atomic structure and isotopes, covering 6.1.1 Structure of the atom, 6.1.2 Isotopes: atomic and mass number, 6.1.3 Sub-atomic particles: masses and charges, and 6.1.4 Electron orbits and energy changes. Each one has a worked solution and a mark scheme showing where the marks go.