Radon Certification Exam Actual Questions and Answers with complete solution

Radon Certification Exam Actual Questions and Answers with complete solution Radon Gas Characteristics -not detected by human senses -naturally occurring -chemically unreactive The nucleus of an atom consists of ____________ and ______________ protons and neutrons What characteristic of an atom determines the charge? Electrons What characteristic of an atom determines the isotope? Nuetrons What characteristic of an atom determines the element I.D? Protons What determines the atomic mass number? The number of protons AND neutrons What is the annual average indoor radon level in the U.S? 1.3 What is the annual average outdoor radon level in the U.S? 0.4 What is the definition of a half-life? The time required for HALF of the material to decay ______________ is an atom that has lost or gained electrons Ion 1 picocurie per liter of radon is defined as 2.22 disintegrations per minute within one liter of air How long does it take for radon gas to reach secular equilibrium? 4 hours Higher air flow makes ER ________________ Decrease Lower air flow makes ER _________________ Increase [Working Level(100)]/(pCi/L) Equilibrium Ratio Equation Radon decay products primarily responsible for damage to lung cells Polonium 218 and Polonium 214 ______________ is a measure of exposure to radon decay products Working Level Month The largest single contributor to a persons total exposure to all forms of radiation will come from: Radon gas A person who smokes is _____ times more likely to contract lung cancer from radon 15 4 factors that influence the strength of the Radon source in the soil 1. Radium content of the soil 2. Size of the soil particles