Nuclear Radiation. Reference chapter: 22. Some nuclei are unstable. They can change into isotopes or different elements. Types of nuclear radiation : alpha particles, beta-particles, gamma rays. Heading Vocabulary Important Facts. Alpha Particles (a).
Reference chapter: 22
Left page IN:100
Sketch alpha, beta & gamma decay pictures & the chart beneath the pictures
The half life of sodium-25 is 1 minute. How much of a 100 g sample of Na-25 would be left after 1 minute? How much would be left after 2 minutes?