What is the effect of low ionization potential on electron affinity?

Study for the 2025 QRC Chemist Evaluation Exam. Prepare with flashcards, multiple-choice questions, and detailed explanations. Get exam-ready now!

Atoms with low ionization potential are more likely to have higher electron affinity because a lower ionization potential indicates that the atom can easily lose an electron. When an atom readily loses an electron, it also tends to accept additional electrons more readily, often resulting in a stronger attraction for incoming electrons. This behavior is particularly common in elements located on the left side of the periodic table, such as alkali metals, which have lower ionization energies and are therefore more likely to gain electrons, exhibiting higher electron affinities.

Additionally, the ionization potential represents the energy required to remove an electron from a neutral atom. In contrast, electron affinity is the energy change that occurs when an electron is added to an atom. A low ionization potential suggests that the electronic structure of the atom is more favorable for the addition of an electron, facilitating higher electron affinity.

While it is also true that the relationship between ionization potential and electron affinity can vary across different elements and the periodic table, the trend indicates that low ionization energy can correlate with a higher tendency to gain electrons, leading to higher electron affinity values for such elements.

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