Question

How electron affinity changes in the periodic table.​

Answer 1

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As we move from left to right of credit tables size decreases does nuclear charge increases and hence electron affinity increases .

As we move down the group, due to increase in number of shells screening effect increases and hence electron affinity decreases.

Answer 2

Answer:

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Explanation:

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.