Cliffs AP Chemistry, 3rd Edition

Answer: B

10. The electronegativity of carbon is 2.5, whereas that of oxygen is 3.5. What type of bond

would you expect to find in carbon monoxide?

A. Nonpolar covalent

B. Polar covalent

C. Covalent network

D. Ionic

E. Delta

Answer: B

Electronegativity differences less than 1.7 are classified as covalent. Unequal differences in
sharing electrons are known as polar covalent.

11. Which one of the following contains a coordinate covalent bond?

A. NH 2 5 +

B. BaCl 2

C. HCl

D. H 2 O

E. NaCl

Answer: A

A coordinate covalent bond, also known as a dative bond, is a bond in which both electrons are
furnished by one atom.

H

N

H

H

N

H

H

Cl

Cl Cl

B

Covalent Bonding