Which row in the table correctly describes the change in the number of subatomic particles when a neutral atom forms a positive ion and a negative ion?
| Formation of a positive ion | Formation of a negative ion | |
|---|---|---|
| A | Number of protons increases | Number of electrons increases |
| B | Number of electrons decreases | Number of electrons increases |
| C | Number of electrons decreases | Number of protons decreases |
| D | Number of protons increases | Number of protons decreases |
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.