7. Elements with very large first ionization energies also tend to have highly exothermic electron affinities (EA). Electron affinity is a measure of the energy change when an electron is added to a neutral gaseous atom): 1 X(g) + 1 e1- ? 1 X1-(g) for an atom of Fluorine, EA = -5.45 x 10-19 J a. Why would atoms with very positive ionization energies have very negative (exothermic) electron affinities? Explain your thinking. b. Which group (family) of elements would you expect to be an exception to this statement? Explain your thinking.
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Ionization energy (IE) is the energy required to remove an electron from a neutral gaseous atom. A high IE means that the atom holds its electrons tightly and it is difficult to remove an electron from it. This is usually the case for elements with a nearly full Show more…
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