Chapter Nine: Molecular Geometry Flashcards
What is the degree of the angle in a linear molecule?
180
What is the degree of the angle in a trigonal planar molecule?
120
What is the degree of the angle in a tetrahedral molecule?
109.5
What are the two degrees of the angles in a trigonal bipyramidal molecule?
120
90
What is the degree of the angle in a octahedral molecule?
90
Are nonbonding pairs larger or smaller than bonding pairs?
Larger
Repulsions of nonbonding pairs are greater than bonding pairs and compress the bond…to lower values
angles
Do double and triple bonds place greater or smaller sized electron clouds or regions on one side of the central atom when compared to single bonds?
Greater
When a molecule is symmetric in all directions it is?
Nonpolar
When a molecule is asymmetric in some direction it is?
Polar
The overlap between two electrons with opposite spins results in a…bond
Covalent Bond
What kind of bond?
- head-to-head overlap
- cylindrical symmetry of electron density about the internuclear axis
Sigma Bond
What kind of bond?
- side-to-side overlap
- electron density above, and below, the internuclear axis
Pi Bond
What type of orbitals form by mathematical mixing of atomic orbitals to create new orbitals of equal energy, called Degenerate Orbitals?
Hybrid Orbitals
The two rules of Hybridization (same word in both blanks)
1. # of hybrid orbitals that you make equals the # of…that you start with
2. The shape of the hybrid orbitals depends on the shapes of the…you mix together
atomic orbitals
