The two most common isotopes of uranium are 235U and 238U . (a) Compare the number of protons, the number of electrons, and the number of neutrons in atoms of these two isotopes. (b) Using the periodic table in the front inside cover, write the electron configuration for a U atom.(c) Compare your answer to part (b) to the electron configuration given in Figure 6.31. How can you explain any differences between these two electron configurations? (d) 238U undergoes radioactive decay to 234Th. How many protons, electrons, and neutrons are gained or lost by the 238U atom during this process? (e) Examine the electron configuration for Th in Figure 6.31. Are you surprised by what you find? Explain.
Lecture Notes: 9/129/16 o Electromagnetic Force is mediated by electric and magnetic fields These forces act at a distance Electromagnetic force is much stronger than gravity and can be attractive or repulsive Electrostatic force between charged particles; special case of electromagnetic force Like charges repel; unlike charges attract q1q2 Coulomb's Law: Fα 2 q1 nd q2 are the charges, r is the distance r between the two particles Gravitational forces are two small to be detected at atomic/molecular leve