Which of the following element has the maximum electron affinity_____?
Correct answer: A. Cl
- A. Cl
- B. Br
- C. I
- D. F
Explanation
Chlorine has the greatest electron affinity among these elements because its larger atomic size allows an incoming electron to enter without the strong electron-electron repulsion found in fluorine's very small 2p shell. Students often choose F because it is the most electronegative element, but electronegativity and electron affinity are related but not identical properties.
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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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