Radon decay products definition
Radon decay products means the four (4) short-lived radioactive elements
Radon decay products means the four (4) short-lived radioactive elements polonium (Po-218), lead (Pb-214), bismuth (Bi-214), and polonium (Po-214) which exist as solids and immediately follow radon (Rn-222) in the decay chain;
Radon decay products means, for purposes of this Part, the radionuclides formed as a result of the decay of radon-222, specifically polonium-218, bismuth-214, lead-214, and polonium-214; or as a result of the decay of radon-220, specifically polonium-216, lead-212, bismuth-212, and polonium- 212.