Question

 1. Define a buffer. 

 2. Nuclear reactions can produce a great deal of energy. What is the source of this energy?

 3. Radon-221 can undergo two types of radioactive decay In a typical sample of radom-221, 22% decays to francium221, while the other 78% decays to polonium-217. Classify the reactions as α, β or positron emission .

 4. What are the two rules for balancing a nuclear equation? 

 6. Sodium-24 emits both B and y radiation. What is the appropriate shielding be for someone who works with sodium-24?

Answer 1

6. For someone working with sodium-24 which emits dangerous beta- and gamma- radiations materials with low atomic number (Z) works best as a protective shield for these dangerous radiations.