Chapter 9 key terms

Question 1

When is a molecule polar?

Answer 1

When bond dipoles aren’t symmetrical

Question 2

When is a molecule non polar?

Answer 2

the bond dipoles cancel, so they are equal and/or arranged symmetrically around the center

Question 3

What is Valence-Bond Theory?

Answer 3

increased overlap brings the atoms together until a balance is reached between the like charge repulsions and the electron-necleus attraction

Question 4

What is hybridization?

Answer 4

Hybrid orbitals form by “mixing” valence-bond theory atomic orbitals to create new orbitals of equal energy

Question 5

Is the shape of the hybrid orbitals the same as the shape of the atomic orbitals?

Answer 5

No, they are different

Question 6

What are degenerate orbitals?

Answer 6

orbitals of equal energy

Question 7

What is molecular orbital theory?

Answer 7

molecular orbitals differ from atomic orbitals because they represent the entire molecule, not a single atom

Question 8

What two molecular orbitals are formed when two atomic orbitals overlap?

Answer 8

one bonding, one antibonding