What is the goal of valence shell electron pair repulsion theory?
- The central atom determines the geometry
- Space out electron pairs to lower energy
What are electron groups?
- Electron pairs
- Electron bonds
What are the molecules that form with 2 electron groups?
- 0 lone pairs
- Electron geometry of is linear
- Molecular geometry is linear
What are the molecules that form with 3 electron group?
- 3 bonds
- 2 bonds and 1 lone pair
What is molecular geometry?
- How the molecule looks in space
- Ignores the lone pairs
What is electron geometry?
-Counts all electron groups including lone pairs
What is the electron geometry, molecular geometry, and degrees of 3 bonds?
- e- geo. = Trigonal planar
- mole. geo. = Trigonal planar
- degree = 120
What is the electron geometry, molecular geometry, and degrees of 2 bonds and one lone pair?
- e- geo. =Trigonal planar
- mole. geo. = Bent
- <120
What are the molecules that form with 4 electron group?
- 4 bonds
- 3 bonds and 1 lone pair
- 2 bonds and 2 lone pair
What is the electron geometry, molecular geometry, and degrees of 4 bonds?
- e- geo. = Tetrahedral
- mole. geo. = Tetrahedral
- degrees = 109.5
What is the electron geometry, molecular geometry, and degrees of 3 bonds and 1 lone pair?
- e- geo. = Tetrahedral
- mole. geo. = Trigonal pyramidal
- <109.5
What is the electron geometry, molecular geometry, and degrees of 2 bonds and 2 lone pair?
- e. geo. = Tetrahedral
- mole geo = bent
- <109.5
What are the molecules that form with 5 electron group?
- 5 bonds
- 4 bonds and 1 lone pair
- 3 bonds and 2 lone pair
What is the electron geometry, molecular geometry, and degrees of 5 bonds?
- e. geo. = Trigonal bipyramidal
- mole geo. = Trigonal bipyramidal
- 120 (equatorial)
- 90 (axial)
What are the molecules that form with 6 electron group?
- 6 bonds
- 5 bonds and 1 lone pair
- 4 bonds and 2 lone pair
What is the electron geometry, molecular geometry, and degrees of 6 bonds?
- e- geo. = Octahedral
- mole. geo. = Octahedral
- 90
What is the electron geometry, molecular geometry, and degrees of 5 bonds and 1 lone pair?
-e- geo. = Octahedral
-mole. geo. = Square pyramidal
<90
What is the electron geometry, molecular geometry, and degrees of 4 bonds and 2 lone pair?
- e- geo. = Octahedral
- mole. geo. = square planar
- 90
What is the electron geometry, molecular geometry, and degrees of 4 bonds and one lone pair?
-e- geo. = Trigonal bipyramidal
-mole geo. = Seesaw
<90 (axial)
What is the electron geometry, molecular geometry, and degrees of 3 bonds and 2 lone pair?
-e- geo. = Trigonal bipyramidal
- mole geo. = T-shaped
<90
What is the electron geometry, molecular geometry, and degrees of 2 bonds and 3 lone pair?
- e- geo. = Trigonal bipyramidal
- mole geo. = Linear
- 180
What is a rule of thumb for molecules with 5 electron groups?
-Lone pair are not placed on the axial position.
What is the electron geometry, molecular geometry, and degrees of 2 bonds and 3 lone pair?
e- geo. = Trigonal bipyramidal
- mole geo. =Linear
180
