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Radon Exam Questions and Answers 100% Pass

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Radon Exam Questions and Answers 100% Pass Nucleus of an atom Correct Answer-Contains one or more positively charged protons and uncharged neutrons Number of protons Correct Answer-Atomic number of an element reflects the.... Mass = Correct Answer-Number of protons and neutrons Radon 222 ...

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  • August 27, 2024
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  • Exam (elaborations)
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  • Radon
  • Radon
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TheeGrades
Radon Exam Questions and Answers 100%
Pass
Nucleus of an atom Correct Answer-Contains one or more positively charged
protons and uncharged neutrons



Number of protons Correct Answer-Atomic number of an element reflects
the....



Mass = Correct Answer-Number of protons and neutrons



Radon 222 (mass #) Correct Answer-86 protons (atomic number) and 136
neutrons



Ion Correct Answer-Atom that either lost or gained electrons



Radon Correct Answer-Major source is from soil

Produced by natural decay of radium

Gas that moves easily through small spaces

Half life 3.8 days

(Gas, inert, no static electrical charge)

, Radon Exam Questions and Answers 100%
Pass
Radium Correct Answer-A decay product of uranium found in rock and soil

- U238 --> R226 --> Rn222



Half life Correct Answer-Half of radon in a sealed volume will decay in 3.8
days, half of the remainder in the next 3.8 days etc.



Thorium 232 --> radon 220 Correct Answer-Half life of 55 seconds, therefore
is less important than radon 222 exposure



Alpha particules Correct Answer-Polonium 218 & polonium 214

Greater health risk, damaging DNA molecules of living cells

Relatively massive but low penetrating power and slow in movement



Gamma Rays Correct Answer-High penetrating power and move at speed of
light



Level of radioactivity Correct Answer-Measured in curies



One picoCurie Correct Answer-1 trillionth of a curie

, Radon Exam Questions and Answers 100%
Pass

One pCi/L Correct Answer-2.22 disintegrations per minute/per liter of air



Radon decay products (RDP) Correct Answer-Radon decays into a series of
elements and isotopes

- First 4 have a short half-life (30 minutes or less)

- Polonium 218 & polonium 214

- Lead 214 & Bismuth 214

Measured in working levels

(particles, chemically reactive, static electrical charge, major health risk b/c stick
to lungs)



Working Level (WL) Correct Answer-Concentration of RDPs in air

- Alpha energy released from polonium



Secular equilibrium Correct Answer-4 hours

Quantities of each of the RDPs has reached the same radioactivity as the radon
forming them

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