Covalent Bonding and Molecules

How many single covalent bonds would a carbon atom form?

• 1 bond

• 2 bonds

• 3 bonds

• 4 bonds

Which of these molecules has only one lone pair on the central atom?

• H₂O

• NF₃

• CBr₄

• SiO₂

Which of these statements is true regarding the molecule C₃H₈ (propane)? Check all that apply.

• Each carbon atom has double bonds.

• Each carbon atom has a tetrahedral arrangement.

• The molecule overall is nonpolar.

• The molecule is capable of forming hydrogen bonds.

• There are no lone pairs on the molecule.

Because of hydrogen bonding, water has a lower boiling point than oxygen gas.

• True

• False

Which of these molecules is capable of forming hydrogen bonds? Check all that apply.

• H₂O

• H₂

• CH₂O

• NH₃

• C₂H₅OH