The following gives the abundances of the elements in humans . Just enter your weight in either kilograms or pounds. In some browsers, after entering your weight you may have to click outside the text entry box to make the calculation work. Elements for which there are no data will always give a value of zero for the weight, no matter what you put in the weight box. Here are a few notes about the hazards and risks associated with radon.
Radon emits a particles.
The main hazard is from inhalation of the element and its radiodecay products which collect on dust in the air. This might be a hazard in, for instance, uranium mines. Recently, radon buildup in homes and cellars from the surrounding soil and rocks has become a safety issue and some areas around the world test homes for radon gas. Part of the problem is that it is the heaviest known gas. Radon is present in some spring waters.