In the molecules $CO, C O_2$, and $C H_2 O$, which $C—O$ bond is the shortest? Which C—O bond is the strongest?

Which of the following statements about renewable resources is TRUE?
(A) They are found only in tropical climates.
(B) They can never be depleted.
(C ) They are replaceable by natural means.
(D) They regenerate quickly.

Consider the carbon-oxygen bond in formaldehyde $\left( CH _2 O \right)$ and carbon monoxide $( CO )$. In which molecule is the $CO$ bond shorter? In which molecule is the $CO$ bond stronger?

Locate the sigma and pi bonds in each of the molecules shown below. $\mathrm{H}-\mathrm{C} \equiv \mathrm{C}-\mathrm{H}$

Which $\mathrm{CO}$ is bond the shortest in the molecule? Which $\mathrm{CO}$ bond is the strongest?

Give the number of valence electrons in N, As, Br, and Se. Predict the number of covalent bonds needed for each of these elements to satisfy the octet rule.

Compare and contrast the two covalent compounds identified by the names arsenic(III) oxide and diarsenic trioxide.

Describe the attractive forces and repulsive forces that exist between two atoms as the atoms move closer together.

How could you predict the presence of a sigma or pi bond in a molecule?

Describe the forces, both attractive and repulsive, that occur as two atoms move closer together.

Describe the forces, both attractive and repulsive, that occur as two atoms move closer together.

Describe the bonding in molecules.

Describe the formation of a covalent bond.

What is the octet rule, and how is it used in covalent bonding?