α\alphaα (alpha)-particles, β\betaβ (beta)-particles and γ\gammaγ (gamma)-rays have different characteristics.
Complete the table by indicating with a tick (✓\checkmark✓) the correct type of radiation for each characteristic. The first row is done for you.
| Characteristic | α\alphaα (alpha)-particles | β\betaβ (beta)-particles | γ\gammaγ (gamma)-rays |
|---|---|---|---|
| most penetrating | ✓\checkmark✓ | ||
| most ionising | |||
| positively charged | |||
| high-speed electrons | |||
| uncharged |
The nucleus of an isotope of cobalt has 27 protons and 33 neutrons. The chemical symbol for cobalt is Co\text{Co}Co.
Write the nuclide notation that describes this nucleus.
A sample contains 4.8×10134.8 \times 10^{13}4.8×1013 atoms of a radioactive isotope of cobalt. The half-life of this isotope of cobalt is 5.0 years.
Calculate the number of atoms of this isotope of cobalt remaining in the sample after 15 years.
134 exam-style questions on CIE IGCSE Physics 5.2.2a Alpha, beta and gamma emission. Each one has a worked solution and a mark scheme showing where the marks go.