Choose the best response for the following: The ionization energy for the chlorine atom is equal in magnitude to the electron affinity for
a. the Cl atom.
b. the Cl $^{-}$ ion.
c. the Cl $^{+}$ ion.
d. the F atom.
e. none of these.
Explain each choice. Justify your choice, and for the choices you did not select, explain what is incorrect about them.