Radon Exam Study Guide with
Complete Solutions
Nucleus of an atom - Answer️️ -Contains one or more positively charged protons and
uncharged neutrons
Number of protons - Answer️️ -Atomic number of an element reflects the....
Mass = - Answer️️ -Number of protons and neutrons
Radon 2...
Ion - Answer✔️✔️-Atom that either lost or gained electrons
Radon - 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)
Radium - Answer✔️✔️-A decay product of uranium found in rock and soil
- U238 --> R226 --> Rn222
Half life - 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 - Answer✔️✔️-Half life of 55 seconds, therefore is less
important than radon 222 exposure
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