Which row in the table correctly describes the changes in proton number, ZZZ, and nucleon number, AAA, of a nucleus undergoing radioactive decay?
| Type of decay | Change in proton number (ZZZ) | Change in nucleon number (AAA) | |
|---|---|---|---|
| A | α \alpha\,α decay | decreases by 4 | decreases by 2 |
| B | β−\beta^-β− decay | increases by 1 | no change |
| C | γ \gamma\,γ emission | decreases by 1 | no change |
| D | β−\beta^-β− decay | decreases by 1 | decreases by 1 |
Row A
Row B
Row C
Row D
120 exam-style questions on CIE IGCSE Physics 5.2.3a Radioactive decay. Each one has a worked solution and a mark scheme showing where the marks go.