Chemistry Exam #3 Electronegativity and Electron Geometry
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19 Terms
Nonpolar covalent bonds have an electronegativity difference of:
0.4 and less
Polar covalent bonds have an electronegativity difference of:
0.5 to equal to 1.9
Ionic bonds have an electronegativity difference of:
1.9 and greater
Symmetry means a molecule is…
nonpolar (dipoles cancel out)
Asymmetry means a molecule is…
polar (dipoles don’t cancel out)
Electron geometry: 2 bonding groups and 0 lone pairs
linear
Electron geometry: 2 bonding groups and 1 lone pair
trigonal planar
Electron geometry: 2 bonding groups and 2 lone pairs
tetrahedral
Electron geometry: 2 bonding groups and 3 lone pairs
trigonal bipyramidal
Electron geometry: 3 bonding groups and 0 lone pairs
trigonal planar
Electron geometry: 3 bonding groups and 1 lone pair
tetrahedral
Electron geometry: 3 bonding groups and 2 lone pairs
trigonal bipyramidal
Electron geometry: 4 bonding groups and 0 lone pairs
tetrahedral
Electron geometry: 4 bonding groups and 1 lone pair
trigonal bipyramidal
Electron geometry: 4 bonding groups and 2 lone pairs
octahedral
Electron geometry: 5 bonding groups and 0 lone pairs
trigonal bipyramidal
Electron geometry: 5 bonding groups and 1 lone pair
octahedral
Electron geometry: 6 bonding groups and 0 lone pairs
octahedral
Molecular Geometry: 5 bonding pairs and 1 lone pair
square pyramidal, <90