No, iodine does not have a lower electron affinity than fluorine. In fact, iodine has a higher electron affinity than fluorine. Electron affinity is the energy change that occurs when an atom accepts an electron to form an anion. The greater the electron affinity, the more strongly the atom attracts electrons. The electron affinity of fluorine is 328 kJ/mol, while the electron affinity of iodine is 295 kJ/mol. This means that iodine has a weaker attraction for electrons than fluorine.