Radioactivity and Nuclear Chemistry

1. What is the standard international unit used to measure activity?

  1. Curie (Ci)
  2. Rutherford (Rd)
  3. Becquerel (Bq)
  4. Newton (N)
Show Answer

Answer: Option C. Becquerel (Bq)

2. What is the difference between the initial and total mass energy of radioactive decay products called?

  1. Disintegration energy
  2. Gamma energy
  3. Energy absorbed
  4. Isotope difference
Show Answer

Answer: Option A. Disintegration energy

3. What is the relationship between Becquerel and Curie unit?

  1. 1 becquerel equals approximately 3.7 x10^10 curies
  2. 1 curie equals approximately 3.7 x10^10 becquerels
  3. They have no relationship
  4. Becquerel measures volume while Curie measures intensity
Show Answer

Answer: Option B. 1 curie equals approximately 3.7 x10^10 becquerels

4. What is the half-life period of the Radium-223 isotope?

  1. 5.7 days
  2. 6 months
  3. 23 hours
  4. 11.4 days
Show Answer

Answer: Option D. 11.4 days

5. What is the typical Q-value for alpha-decay?

  1. Less than zero
  2. Greater than zero
  3. Equal to zero
  4. Less than or equal to zero
Show Answer

Answer: Option B. Greater than zero