Which of the nuclear decay products is pure energy? 2. Which of the nuclear deca

Question

Which of the nuclear decay products is pure energy? 2. Which of the nuclear decay products has the least penetration? 3. What is the nuclear symbol for a beta particle (beta)? 4. How do nuclear and chemical reactions differ? 5. Which nuclear decay product is the slowest? 6. How do beta particles and positrons differ? 7. If polonium-210 is unstable because it has too much mass, what decay product is it most likely to produce to become stable? 8. What is the definition of half-life? 9. What is the identity of the unknown product of beta decay of rhenium-187?^187_75 Re rightarrow^0_-1 e + ______ 10. What nuclear decay particle is created by the decay of potassium-40 to calcium-40? 11. A 0.050 mg dose of iodine-131 was administered to a patient to treat hyperthyroidism. What is the remaining mass after 32.4 days? The half-life of iodine-131 is 8.1 days. 12. Isotopes are used in medicine for cancer treatment and medical imaging. Name an isotope for cancer treatment as an example. 13. Now name another isotope used in medical imaging, and the name of technique. 14. Why would isotopes used for cancer treatment not be used for medical imaging? 15. Name three of the five principles for minimizing exposure to ionizing radiation. 16. Which measurement is most useful for detecting harm to personal from radioactive material, the curie, roentgen or rem?

Explanation / Answer

(1) Gamma decay is pure energy decay.

(2) Higher is the mass of the particle, lower is its penetration power.Out of three major particles released during radio active decay, alpha particle is having more mass hence lower penetration power.

(3) Beta partilce is nothing but an electron. 01-e

(4) Chemical reaction occur due to the involvement of electrons of valenece shell but nuclear reactions occur due to decay of nucleus.

(5) Alpha decay product

(6) Beta particle carry one unit of negative charge but positron carry one unit of positive charge.

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