Radon is one of a group of gases called inert gases, and it is naturally radioactive. Learn more about radon, the heaviest of the inert gases, with help from a science teacher in this free video on physical science.
What Is Radon?By Steve Jones; Updated October 20, 2017
About the Author
Steve Jones is an experienced mathematics and science teacher. He also has many years experience in the field of public speaking and debate, and he is an organizer of debate competitions for high school students. He is the chairman of the Hungarian branch of the English-Speaking Union, which is an international educational charity founded in 1918 to promote international understanding and friendship through the use of the English language.