Structure and Bonding Tutorial Questions

Structure and Bonding Tutorial Questions 1. Draw Lewis structures, including resonance structures where applicable, for the following compounds and give their molecular geometry a. NH3 b. XeF6 c. SO42d. PF5 e. NO32. What is the P-O bond order in PO43-? 3. How many nonbonding electron pairs are on the central atom in PF4+? 4. Is XeF4 a polar molecule according to VSEPR Theory? 5. Which of the following molecules has trigonal planar geometry? a. PF3 b. BF3 c. SO3 d. NH3 6. What is the bond order of Ne2 according to MO Theory? Does this answer agree with your expectations? 7. An MO that is symmetric to inversion, asymmetric to rotation about the bond axis, and antibonding in character would have which label under MO Theory? 8. Which of the following statements about hybridization are true for this molecule?

H C

3

O

O

C

2

H

C

C

N

1N

H

4

H

a. The atom labelled ‘1’ has sp hybridization b. The atom labelled ‘2’ has sp2 hybridization c. The atom labeled ‘3’ has sp3 hybridization d. The atom labeled ‘4’ has sp2 hybridization 9. According to MO Theory, which of the following molecules are paramagnetic? a. N2 b. F2 c. B2 d. C2 10.Label the hybridization of each C, N and O atom in the following molecule

H H N H

H O

O

H

11.Identify the types of intermolecular forces present in each molecule below

Cl

Br

O

Cl

HN

Cl

SH

NH

N H

12.Order the following compounds from lowest to highest predicted boiling points: OH

O

OH

HO

13.Which of the following materials would be expected to show better conductivity at higher temperatures? a. Fe b. Pt c. Graphite d. Si