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| Many ions can be explained because they have gained or lost electrons and attain a ___________. |
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| After ions form, they stick together in a ___________ because opposites attract. |
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| The covalent bond between two atoms depend on what 3 things? |
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1. Balance of attractions between one atom's positive nucleus and the other atom's negative electrons
2. Proton-proton repulsions
3. Electron-electron repulsions |
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| What happens if two atoms have half-filled orbitals? |
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| The interactions balance at a SMALL ENOUGH DISTANCE so the electrons can be close to both nuclie at the same time. THIS IS CALLED A COVALENT BOND |
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| the atomic symbol surrounded by valence electrons |
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| In a Lewis Symbol, what do the four sides represent? |
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| The four valence orbitals. |
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| What is the difference in writing the Lewis symbols for positive ions and neg. ions? |
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Positive ions show no valence electrons
Negative ions show an octet |
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| What is the difference in writing the Lewis symbols for positive ions and neg. ions? |
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Positive ions show no valence electrons
Negative ions show an octet |
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