Question 1
Which of the following is
not a very long-lived, radioactive isotope?
◦ C-14
◦ U-238
◦ K-40
◦ Rb-87
Question 2
Which of the following describes radioactive decay by beta particle emission?
◦ The daughter isotope has an atomic number one less than the parent and a mass number two less.
◦ The atomic number of the daughter isotope is one more than the parent; the mass numbers are the same.
◦ The mass number of the daughter isotope is one more than the parent, and both isotopes have the same atomic number.
◦ The daughter isotope has an atomic number two less than the parent and a mass number four less.