A laboratory database lists four particle records.
A neutral atom has proton number 8 and mass number 17.
| Record | Number of protons | Number of neutrons | Number of electrons |
|---|---|---|---|
| P | 8 | 9 | 8 |
| Q | 8 | 10 | 8 |
| R | 8 | 10 | 9 |
| S | 9 | 8 | 9 |
Which gives the record for a neutral atom of a different isotope of the same element?
Record P
Record R
Record S
Record Q
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.