Terms, Reasons of radioactivity, Units, Features of α, β and γ rays, Group displacement law, Radioactive disintegration series, Kinetics of radioactive disintegration, Half life, Average life, Nuclear fission and fusion, Nuclear reactions, Uses of radioactive isotopes and various levels of multiple-choice questions.
RADIOACTIVITY AND NUCLEAR REACTIONS
- The phenomenon of natural radioactivity and natural distegration was discovered by Henri Becquerel.
- Radioactivity was first observed in potassium uranyl sulphate K2UO2(SO4)2.
- α and β rays were discovered by Rutherford while γ rays were discovered by Villiard.
- Artificial radioactivity was introduced by I. Curie and F. Jiolet.
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