Question

How does electron affinity change?​

Answer 1

• Electron affinity generally increases across a period in the periodic table and sometimes decreases down a group.
• The chemical rationale for changes in electron affinity across the periodic table is the increased effective nuclear charge across a period and up a group.

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Answer 2

Answer:

Electron affinity generally increases across a period in the periodic table and sometimes decreases down a group. ... The chemical rationale for changes in electron affinity across the periodic table is the increased effective nuclear charge across a period and up a group.

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