Question

Formaldehyde, H₂CO, is a gas with a characteristicpungent odor. Draw its Lewis structure. Which statements arecorrect regarding its Lewis structure?

a. The C-O bond is a single bond.
b. The C-O bond is a double bond.
c. The C-O bond is a triple bond.
d. C has no lone pair of electrons.
e. O has 0 lone pair of electrons.
f. O has 1 lone pair of electrons.
g. O have 2 lone pairs of electrons.

Answer 1

The Lewis structure of formaldehyde, H₂CO, has a double bond between carbon (C) and oxygen (O), and the oxygen atom has two lone pairs of electrons. option g is correct.

Step-by-step explanation:

The Lewis structure of formaldehyde, H₂CO, can be represented as follows:

H-O-H

|

H-C=O

|

H

In this structure, the C-O bond is a double bond because there are two bonding pairs between carbon (C) and oxygen (O). The C atom has no lone pair of electrons (option d) and the O atom has two lone pairs of electrons (option g).

This Lewis structure shows that formaldehyde has a trigonal planar shape with bond angles slightly larger at the double bond (121°) and slightly smaller between the single bonds (118°).