Electron Affinity: Does It Increase Across Periods?

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SUMMARY

Electron affinity generally increases across periods in the periodic table and decreases down groups. This trend is attributed to the increasing nuclear charge across periods, which enhances the attraction of added electrons. In contrast, the addition of electron shells down groups reduces the effective nuclear charge experienced by the outermost electrons, leading to lower electron affinity values. Understanding these trends is crucial for predicting the reactivity of elements.

PREREQUISITES
  • Basic understanding of atomic structure and electron configuration
  • Familiarity with periodic trends in chemistry
  • Knowledge of nuclear charge and its effects on electron behavior
  • Concept of ionization energy and its relationship to electron affinity
NEXT STEPS
  • Research the concept of electron affinity in detail using textbooks or online resources
  • Explore periodic trends and their implications for chemical reactivity
  • Study the relationship between ionization energy and electron affinity
  • Investigate exceptions to the general trends in electron affinity among specific elements
USEFUL FOR

Chemistry students, educators, and professionals interested in understanding atomic behavior and periodic trends in elements.

emily(:
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Does electron affinity increase across the period, and decrease down the group?
 
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Well, what do you already know about electron affinity? What does the term mean?
 

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