Electron Affinity

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Chemistry

11th

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5 Terms

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Electron Affinity
The ability to attract electrons, measured as an energy change.
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Decreases…
Top-bottom. Right-left
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Increases
Bottom-top, Left-right.
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Why does Electron affinity increase
The less electrons it has, the smaller the atom. This increases the positive charge of the atom and therefore can attract electrons better.
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Why does electron affinity decrease
It has more electrons and the outermost electrons are further from the nucleus and their attraction is weaker.