Radon Exam Prep Exam Questions With
Correct Answers
What are Properties of Radon?
| | | |
Radioactive, inert gas, naturally occuring, denser than other gasses,
| | | | | | | | |
odorless, colorless, and tasteless.
| | |
Basic Parts of an Atom are what?
| | | | | |
Nucleus, protons (+charge), Neutrons (neutral) and Orbital Electrons (-
| | | | | | | |
charge)
Atomic Mass is what? | | |
sum of protons and neutrons
| | | |
Atomic Number is what?
| | |
# of protons
| |
,How are elements defined?
| | |
By the atomic # or the # of protons
| | | | | | | |
How are different isotopes of an element distinguished?
| | | | | | |
By the atomic mass
| | |
Any atom with 86 protons is called what?
| | | | | | |
Radon
What is the most common and most stable isotope of radon?
| | | | | | | | | |
Rn 222
|
What is an isotope?
| | |
An atom of the same element, but having different number of neutrons.
| | | | | | | | | | |
*All radon isotopes have 86 protons in the nucleus
| | | | | | | | |
,The term "half life" means
| | | |
The time required for HALF (not all) of the atoms to decay
| | | | | | | | | | |
What is an ion? | | |
an atom that has either lost or gained electrons creating a net positive
| | | | | | | | | | | | |
or negative charge
| |
How are RDPs (Radon Decay Products) measured?
| | | | | |
Working Levels (WL) | |
Radon Decay Products (RDPs)
| | |
Solid particles of heavy metals, short lived RDPs are most significant,
| | | | | | | | | | |
have static charges, chemically reactive, and source of cell damage to
| | | | | | | | | | |
the lungs
|
What is Equilibrium Ratio (ER) ?
| | | | |
, The ratio of all RDPs a particular Rn Concentration can produce versus
| | | | | | | | | | | |
the % of those RDPs that are suspended in the air (where they are
| | | | | | | | | | | | | |
measurable)
What is the Equilibrium Ratio (ER) assumption?
| | | | | |
The ER typically stays between 0.3 to 0.7 (30% to 70%) because of plate
| | | | | | | | | | | | | |
out. For any given concentration of radon, it's assumed half of the RDPs
| | | | | | | | | | | | |
have stayed airborne and the remainder have plated out (an ER of 50%)
| | | | | | | | | | | |
What is EPA's Radon Action Level?
| | | | |
4.0 PCi/L
|
How many U.S. homes have levels at or above the EPA's action level?
| | | | | | | | | | | |
1 in 15 U.S. homes
| | | |
What is the average radon indoor level?
| | | | | |
1.3 PCi/L
|
Correct Answers
What are Properties of Radon?
| | | |
Radioactive, inert gas, naturally occuring, denser than other gasses,
| | | | | | | | |
odorless, colorless, and tasteless.
| | |
Basic Parts of an Atom are what?
| | | | | |
Nucleus, protons (+charge), Neutrons (neutral) and Orbital Electrons (-
| | | | | | | |
charge)
Atomic Mass is what? | | |
sum of protons and neutrons
| | | |
Atomic Number is what?
| | |
# of protons
| |
,How are elements defined?
| | |
By the atomic # or the # of protons
| | | | | | | |
How are different isotopes of an element distinguished?
| | | | | | |
By the atomic mass
| | |
Any atom with 86 protons is called what?
| | | | | | |
Radon
What is the most common and most stable isotope of radon?
| | | | | | | | | |
Rn 222
|
What is an isotope?
| | |
An atom of the same element, but having different number of neutrons.
| | | | | | | | | | |
*All radon isotopes have 86 protons in the nucleus
| | | | | | | | |
,The term "half life" means
| | | |
The time required for HALF (not all) of the atoms to decay
| | | | | | | | | | |
What is an ion? | | |
an atom that has either lost or gained electrons creating a net positive
| | | | | | | | | | | | |
or negative charge
| |
How are RDPs (Radon Decay Products) measured?
| | | | | |
Working Levels (WL) | |
Radon Decay Products (RDPs)
| | |
Solid particles of heavy metals, short lived RDPs are most significant,
| | | | | | | | | | |
have static charges, chemically reactive, and source of cell damage to
| | | | | | | | | | |
the lungs
|
What is Equilibrium Ratio (ER) ?
| | | | |
, The ratio of all RDPs a particular Rn Concentration can produce versus
| | | | | | | | | | | |
the % of those RDPs that are suspended in the air (where they are
| | | | | | | | | | | | | |
measurable)
What is the Equilibrium Ratio (ER) assumption?
| | | | | |
The ER typically stays between 0.3 to 0.7 (30% to 70%) because of plate
| | | | | | | | | | | | | |
out. For any given concentration of radon, it's assumed half of the RDPs
| | | | | | | | | | | | |
have stayed airborne and the remainder have plated out (an ER of 50%)
| | | | | | | | | | | |
What is EPA's Radon Action Level?
| | | | |
4.0 PCi/L
|
How many U.S. homes have levels at or above the EPA's action level?
| | | | | | | | | | | |
1 in 15 U.S. homes
| | | |
What is the average radon indoor level?
| | | | | |
1.3 PCi/L
|
