chem 101 test 2

If mercury-201 undergoes electron capture, what nuclide will result?

Au-201

The RBE for a particle beam is 15, and the dose of radiation delivered is 20rad. Find the dose in rem.

300

Find the biologically effective dose in sieverts for a radiation dose of 0.75Gy due to alpha particles, which have an RBE of 10.

7.5

Which description best fits the definition of daughter nuclide? A daughter nuclide is a high-energy helium nucleus. A daughter nuclide is an unstable nuclide that converts spontaneously into another nuclide. A daughter nuclide is a small particle emitted from a nuclide that undergoes radioactive decay. A daughter nuclide is a nuclide produced by the radioactive decay of another nuclide.

A daughter nuclide is a nuclide produced by the radioactive decay of another nuclide.

Which form of decay always changes the atomic number of the nuclide? Select the correct answer below: β emission positron emission electron capture all of the above

all of the above

Which of the following is included in nuclide symbols, but is not strictly necessary for the identification of the nuclide? Select the correct answer below: mass number atomic number isotope number none of the above

atomic number

If you are measuring radioactive emission for a medical application, what would be an appropriate unit of measurement? Select the correct answer below: sievert (Sv) Roentgen equivalent man (rem) gray (Gy) curie (Ci)

curie (Ci)

What kind of tool would be used to monitor radiation exposure for a person? Select the correct answer below: Geiger counter dosimeter scintillation counter

dosimeter

Which is the term for the repulsive force between charged nucleons? Select the correct answer below: strong nuclear force weak nuclear force electromagnetic force there is no repulsion between nucleons

electromagnetic force

The only form of decay that involves the absorption of a particle rather than particle emission is: Select the correct answer below: positron emission electron capture α decay none of the above

electron capture

Beta decay will occur if the neutron to proton ratio is too low. true false

false

Which unit involves the measurement of the energy of the absorbed dose? becquerel curie gray sievert

gray

The SI unit for measuring absorbed radiation dose is __________. Select the correct answer below: sievert (Sv) Roentgen equivalent man (rem) gray (Gy) curie (Ci)

gray (Gy)

Electron capture is most likely to occur if a nucleus: Select the correct answer below: is too large has a neutron to proton ratio that is too large has a neutron to proton ratio that is too small is excited

has a neutron to proton ratio that is too small

Positron emission is most likely to occur if a nucleus: Select the correct answer below: is too large has a neutron to proton ratio that is too large has a neutron to proton ratio that is too small is excited

has a neutron to proton ratio that is too small

γ emission is most likely to occur if a nucleus: Select the correct answer below: is too large has a neutron to proton ratio that is too large has a neutron to proton ratio that is too small is excited

is excited

α emission is most likely to occur if a nucleus: Select the correct answer below: is too large has a neutron to proton ratio that is too large has a neutron to proton ratio that is too small is excited

is too large

Sometimes a nuclide is referenced by the name of the element followed by the: Select the correct answer below: atomic number mass number electrical charge none of the above

mass number

The weak nuclear force is responsible for _______. nuclear decay the attraction between objects with mass the attractive force between nucleons the repulsive force between nucleons

nuclear decay

The identity of an atom can change during a: Select the correct answer below: chemical reaction nuclear reaction redox reaction none of the above

nuclear reaction

Which of the following are devices used to measure personal exposure to radiation? Select all that apply: quartz fiber dosimeters Geiger counters scintillation counters film badges

quartz fiber dosimeters film badges

The SI unit measuring radiation dose is the gray (Gy). Which unit is equal to a gray scaled by the numeric factor called the relative biological effectiveness? Select the correct answer below: sievert (Sv) Roentgen equivalent man (rem) radiation absorbed dose (rad) curie (Ci)

sievert (Sv)

When balancing nuclear reactions: Select the correct answer below: there must be a net increase in charge there must be a net decrease in charge there must be no net change in charge depends on the reaction

there must be no net change in charge

Which of the four fundamental forces is responsible for nuclear decay? Select the correct answer below: strong nuclear force weak nuclear force electromagnetic force gravity

weak nuclear force

The term electron capture best fits which of the following descriptions? Select the correct answer below: Electron capture is a phenomenon exhibited by an unstable nucleon that spontaneously converts into a more stable nucleon. Electron capture is the combination of a core electron with a proton to yield a neutron within the nucleus. Electron capture is the addition of an electron to a neutral atom to form an anion. None of the above

Electron capture is the combination of a core electron with a proton to yield a neutron within the nucleus.

In radioactive decay, the parent nuclide is unstable and decays into the smaller nuclide, which often times does not undergo further decay. Select the correct answer below: True False

False

Which of the following are devices used to detect and measure radiation? Select all that apply: Geiger counters scintillation counters becquerels sieverts radiation dosimeters

Geiger counters scintillation counters radiation dosimeters

Which of the following is true of α decay? Select all that apply: It decreases the nuclide's atomic number by 2. It is most likely to occur in lighter nuclides. It increases the nuclide's mass. It increases the nuclide's atomic number by 2.

It decreases the nuclide's atomic number by 2.

Which of the following is true of positron emission? Select the correct answer below: It increases the nuclide's atomic number by 1. It decreases the nuclide's neutron:proton (n:p) ratio. It decreases the nuclide's mass number by 1. It increases the nuclide's neutron:proton (n:p) ratio.

It increases the nuclide's neutron:proton (n:p) ratio.

All of the options below that are true of γ emission, EXCEPT: Select the correct answer below: The neutron:proton (n:p) ratio of the parent nuclide remains the same. The nuclide's atomic number remains the same. It is most likely to occur when the neutron:proton (n:p) ratio is too small. It has serious impacts on the health of humans and animals exposed to it.

It is most likely to occur when the neutron:proton (n:p) ratio is too small.

Which of the following is true of electron capture? Select the correct answer below: It decreases the nuclide's mass number by 2. It is most likely to occur when the neutron:proton (n:p) ratio of the nuclide is too small. It is most likely to occur when the nuclide is formed in an excited state. It is most likely to occur when the neutron:proton (n:p) ratio of the nuclide is too large.

It is most likely to occur when the neutron:proton (n:p) ratio of the nuclide is too small.

Which is true about the nucleus? Select the correct answer below: Most of the volume of an atom is taken up by the nucleus. Electrons are examples of nucleons. The number of protons in the nucleus is called the atomic number (Z) of the element. The force that holds the nucleus together is called the weak nuclear force.

The number of protons in the nucleus is called the atomic number (Z) of the element.

Which of the following best describes the process of positron emission? Select the correct answer below: Positron emission is the breakdown of a neutron into a proton (which remains in the nucleus) and an positron, which is ejected from the nucleus. Positron emission is the emission of protons from a radioactive nuclide. Positron emission is the conversion of a proton into a neutron (which remains in the nucleus) and a positron, which is ejected from the nucleus. Positron emission is the conversion of a proton into a positron in a radioactive nuclide, resulting in γ emission.

Positron emission is the conversion of a proton into a neutron (which remains in the nucleus) and a positron, which is ejected from the nucleus.

Which unit of measurement would give the most complete information on absorbed dose? Curie (Ci) Becquerel (Bq) Radiation Absorbed Dose (RAD) Sievert (Sv)

Radiation Absorbed Dose (RAD)

Which unit of radiation measurement takes into account the relative damage done by the radiation? Becquerel (Bq) Gray (Gy) Sievert (Sv) Curie (Ci)

Sievert (Sv)

In a nuclear reaction, what is rearranged? Select the correct answer below: Chemical bonds Electrons Atoms Subatomic particles

Subatomic particles