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14 Cards in this Set
- Front
- Back
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Ionic bonds involve the ________ of electrons.
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Ionic bonds involve the TRANSFER of electrons.
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Covalent bonds involve the ________ of electrons.
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Covalent bonds involve the SHARING of electrons.
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Which elements usually form double bonds?
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P, C, O, N, S
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Which elements usually form triple bonds?
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C, N
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what are the steps for writing Lewis structures?
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1. find total # of valence electrons.
2. give terminal atoms octet, then central atom. 3. form multiple bonds if necessary. 4. multiple bonds should be formed with "usual" number of bonds for that atom, and look for the exceptions like Be and column 3A |
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What are the steps for writing VSEPR?
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1. draw Lewis structure
2. determine # of electron groups 3. place electron groups as far away as possible. |
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What are the different types of polar bonds?
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Nonpolar (O-O)
Polar Covalent (C-F) Ionic (Li - F) 3.0 |
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Geometries
2,0 |
Electron geometry: linear
Molecular geometry: linear Angle: 180º |
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Geometries
3,0 |
Electron geometry: trigonal planar
Molecular geometry: trigonal planar Angle:120º |
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Geometries
3,1 |
Electron geometry: trigonal planar
Molecular geometry: bent Angle: <120º |
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Geometries
4,0 |
Electron geometry: tetrahedral
Molecular geometry: tetrahedral Angle: 109.5 |
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Geometries
4,1 |
Electron geometry: tetrahedral
Molecular geometry: trigonal pyramidal Angle:<109.5º |
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Geometries
4,2 |
Electron geometry: tetrahedral
Molecular geometry: bent Angle: <109.5 |
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What are some exceptions to the octet rule?
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-NO has an odd # of e⁻ (7ve⁻ on N)
-B likes to form only 6ve⁻ -Be and column 3A can have incomplete octets. -elements in the 3rd period and below can have expanded octets. |
