Covalent Bonding

How many valence electrons are available for bonding in silicon? a. four b. five c. eight d. fourteen

A.

Which compound contains only nonpolar covalent bonds? a. O2 b. CO2 c. H2O d. NO3

A.

Which pair of elements will form a covalent bond? a. hydrogen and chlorine b. sodium and chlorine c. copper and bromine d. zinc and bromine

A.

Which statement about covalent compounds is true? a. They are able to melt at high temperatures. b. They are poor conductors of heat. c. They have strong intermolecular attractions. d. They have atomic bonds that are easy to break.

B.

Which type of bond will most likely be found in HBr? a. an ionic bond b. a metallic bond c. a polar covalent bond d. a nonpolar covalent bond

C.

A solid compound in a sealed container was kept at a very low temperature in a freezer. When placed at room temperature, the substance quickly turned into a liquid. This compound is most likely which of the following? a. an ionic compound because it has a low boiling point b. a covalent compound because it has a low boiling point c. an ionic compound because it has a low melting point d. a covalent compound because it has a low melting point

D.

What is the best reason for the difference in properties of LiCl and C6H14O? a. LiCl and C6H14O have different atomic masses. b. Cl and O belong to different groups of the periodic table. c. One compound is ionic, and the other is metallic. d. One compound is covalent, and the other is ionic.

D.

Which element has the greatest number of valence electrons available for bonding? a. selenium b. boron c. calcium d. chlorine

D.

Which structure shows the correct electron arrangement in CCl4?

D.

Which type of bond will form between two chlorine atoms? a. an ionic bond b. a metallic bond c. a polar covalent bond d. a nonpolar covalent bond

D.