5.2.3.1 — Know that radioactive decay is a change in an unstable nucleus that can result in the emission of α -particles or β -particles and/or γ -radiation and know that these changes are spontaneous and random

5.2.3.1 — Know that radioactive decay is a change in an unstable nucleus that can result in the emission of α -particles or β -particles and/or γ -radiation and know that these changes are spontaneous and random