1. How many protons, neutrons and electrons in
You must show how you come up with the answer. (15)
2. (a) Find the energy in J, eV and MeV for the rest mass of 25 kg. Hint: Use Einstein’s
equation to find energy in J and then convert it to eV and MeV. (6)
(b) Find the radius of a U-238 nuleus. (4)
3. Find the binding energy and the binding energy per nucleon of Th-234. Hint: Use the
information from table in slide 63. (10)
4. Obtain the binding energy and the binding energy per nucleon of Th-234 using the
semiempirical binding energy formula (eq 7). Compare your result with question 3 and
explain the differences between two answers. (10)
5. What is the difference between isotopes, isotones and isobars? Explain in detail (10)