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Questions and Answers
Which type of nuclear transformation involves the emission of a positron?
Which type of nuclear transformation involves the emission of a positron?
- Alpha decay
- Neutron emission
- Beta decay (correct)
- Proton emission
Which element has two isotopes with 75.4% abundance of one and 24.6% abundance of the other?
Which element has two isotopes with 75.4% abundance of one and 24.6% abundance of the other?
- Chlorine (correct)
- Uranium
- Radium
- Plutonium
What is the unit used to measure the number of atoms that decay per unit time?
What is the unit used to measure the number of atoms that decay per unit time?
- MilliCurie (mCi)
- Curie (Ci)
- Becquerel (Bq) (correct)
- MegaBecquerel (MBq)
What is the activity of one gram of pure radium?
What is the activity of one gram of pure radium?
What is the old unit of activity used to measure the activity of one gram of pure radium?
What is the old unit of activity used to measure the activity of one gram of pure radium?
Which unit is a sub-multiple of Curie commonly used to measure activity?
Which unit is a sub-multiple of Curie commonly used to measure activity?
Which equation represents the radioactivity of the sample as the number of radionuclides remaining without disintegration at any time?
Which equation represents the radioactivity of the sample as the number of radionuclides remaining without disintegration at any time?
What does the decay constant (λ) represent in the context of radioactive decay?
What does the decay constant (λ) represent in the context of radioactive decay?
What does the term 'specific activity (SA)' represent in the context of radioactivity?
What does the term 'specific activity (SA)' represent in the context of radioactivity?
What is the relationship between the half-life (t½) and the mean or average life (Ƭ)?
What is the relationship between the half-life (t½) and the mean or average life (Ƭ)?
What does the half-life (t½) represent in the context of radioactive decay?
What does the half-life (t½) represent in the context of radioactive decay?
What is the difference between N(t) and A(t) in the context of radioactive decay?
What is the difference between N(t) and A(t) in the context of radioactive decay?
What does the mean or average life (Ƭ) represent in the context of radioactive decay?
What does the mean or average life (Ƭ) represent in the context of radioactive decay?
What is true about specific activity (SA)?
What is true about specific activity (SA)?
"Unstable nuclei decay spontaneously and randomly". Which parameter directly represents this statement?
"Unstable nuclei decay spontaneously and randomly". Which parameter directly represents this statement?
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