Question

What are radioactive substances?

Answer 1

The energy or particles emitted during radioactive decay are referred to as radiation.

• The rate at which a material emits radiation is referred to as its radioactivity.
• The number of disintegrations per unit of time is used to determine the activity of a sample of radioactive material.
• There are a total of 38 radioactive elements in the universe.
• Examples are Radium: Polonium and barium are some radioactive substances.