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.

• 13:23 “atom, as a half-life of 5.4 times 10 years to power 3 seconds. Calculate is the K constant. So from this question, we are giving the, from the question we are giving the half-life. So half-life, that's T of equals to 5.4...”
• 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...”
• 09:48 “the SI unit of decay constant is a per second. So if you plot a graph of the number of atoms against time, it will give you a decay curve. From the decay curve you can see that after every f life, the atom is reducing by...”