The magnitude of electron affinity depends on
Correct answer: D. All the above
- A. Atomic size
- B. Nuclear charge
- C. Electronic configuration
- D. All the above
Explanation
The correct answer is D: All the above. Electron affinity is influenced by atomic size, nuclear charge, and electronic configuration. A smaller atomic size results in a stronger attraction to added electrons. A higher nuclear charge increases the attraction between the nucleus and an additional electron. Electronic configuration also plays a role, as elements with a nearly complete valence shell have higher electron affinities. Each of these factors contributes to the overall electron affinity of an element.
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About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
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