The half-life of bismuth-210 is 5 days.
The table below gives some information about how the mass of a sample of bismuth-210 changes with time.
Complete the table.
| Mass of bismuth-210 in mg | Time in days |
|---|---|
| 1200 | 0 |
| ..... | 5 |
| 300 | ..... |
90 exam-style questions on Edexcel GCSE Physics 6.3 Nuclear equations and decay. Each one has a worked solution and a mark scheme showing where the marks go.