Radioactivity and Its Types

This lesson covers the definition of radioactivity and the characteristics of radioactive elements. It explains the three types of radiation: alpha particles, beta particles, and gamma rays, along with their properties. The lesson also includes the concept of half-life and decay constants.

• 02:29 “That is anytime an alpha particle is emitted from a radioactive element. Then that means an atom of helium has been emitted and helium nuclei usually represented by 4 to H e. They are relatively I mass. They have little...”
• 03:19 “beta particle is emitted from a radiative substance, then they are atomic number. We increase by 1. Why the mass number will remain unchanged? Because the mass number is a 0. Beta particles are relatively light. They hav...”
• 00:50 “sketch the diagram of the cake off and solve problems of half-life. Now let's define radioactivity. Radioactivity is the spontaneous disintegration or decay of nucleus of the atom of an element during which it emits alph...”