
Radioactivity and Law of Radioactive Decay
Radioactivity :- Henry Becquerel discovered radioactivity in 1896 by accident. Experiments performed subsequently showed that radioactivity was a nuclear phenomenon in which an unstable nucleus undergoes a decay. Becquerel studying the fluorescence and phosphorescence of compounds irradiated with visible light, the observed an interesting phenomenon. After illuminating some pieces of uranium-potassium sulphate with visible light…