An ion-sorting instrument produces these records.
| record | number of electrons | relative charge | number of neutrons |
|---|---|---|---|
| J | 13 | +1 | 14 |
| K | 11 | +2 | 14 |
| L | 14 | +1 | 14 |
| M | 10 | +3 | 17 |
Which record gives an ion with atomic number 13 and mass number 27?
record M
record J
record K
record L
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.