Chapter+9-template-1[1]

Chapter+9-template-1[1] - Trends in electron affinity...

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Trends in electron affinity Electron affinity (EA): The second electron affinity:
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Trends in electron affinity Atoms with a low EA tend to form cations . Atoms with a high EA tend to form anions . The trends in electron affinity are not as regular as those for atomic size or IE.
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IE and EA: 3 general behavior patterns 1. Reactive nonmetals: Group 6A and 7A (halogens) have high IEs and highly negative (exothermic) EAs. They lose electron with difficulty but attract them strongly. Therefore, in their ionic compounds, they form negative ions. 2. Reactive metals: Group 1A and 2A have low Ies and slightly negative EAs: they lose electrons easily but attract them weakly if at all. Therefore, in their ionic compounds, they
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IE and EA: 3 general behavior patterns 3. Noble gases: Group 8A have very high IEs and slightly positive (endothermic) EAs. They tend not to lose or gain electrons
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Trends in three atomic properties
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bonding We are going to look at the formation of chemical bonds. Bonding is the result of
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Chapter+9-template-1[1] - Trends in electron affinity...

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