Exam 9: Molecular Geometry: Shape Determines Function

According to band theory, when the lower energy ________ band is separated from the higher energy ________ band by a small band gap, the material will act as a ________ of electricity.

The bonding in solid-state metals can be described as ________

Select which of the following repulsive interactions between electron pairs would be smallest.

Arrange the molecules below from lowest to highest bond order. C₂, N₂, and F₂

Use MO theory to predict the bond orders of the following molecular ions. Which one do you predict does not exist?

Which of these molecules is chiral?

Of the following molecules (O₃, SCl₂, SO₂, CS₂, and CO₂), which ones do you predict to have a bond angle of 180?

A ________ geometry corresponds to a steric number of ________.

Describe the valence bond picture of bonding in acetylene, which is shown below. Identify the number of valence electrons, the number of  bonds, the number of  bonds, and the hybridization of the carbon atomic orbitals.

A ________ geometry corresponds to a steric number of ________.

Which of the following has the largest bond angle?

Ethanol has the formula CH₃CH₂OH. The central carbon atom has a ________ local molecular geometry and ________ hybridization.

Identify the local molecular geometry and hybridization at atoms a and b in Ritalin, shown below, which is a drug used to treat attention deficit hyperactivity disorder. In the line drawing, the hydrogen atoms bonded to carbon are not shown explicitly.

Which statement about VSEPR theory is not correct?

Predict the bond angles at the three atoms marked in the following peptide.

What type of hybridization is needed to describe the bonding in a T-shaped molecule?

Which of the following molecules is T-shaped?

Which of the following is a planar molecule?

The band structure of semiconductors differs from that of metal conductors in that ________

Which of the following represents a * antibonding molecular orbital?