All the following species are best described by writing at least two Lewis structures EXCEPT

a. O3.

b. SO2.

c.

d.

e. SO3.

Explanation thanks

You omitted two of the choices.

To determine which species can be described by writing at least two Lewis structures, we need to look at their molecular formulas and analyze the central atom and the surrounding atoms.

a. O3: Ozone (O3) contains three oxygen atoms bonded together. The central oxygen atom forms one single bond with each of the surrounding oxygen atoms. There are no lone pairs of electrons on the central oxygen atom, so only one Lewis structure can be drawn for O3. Therefore, O3 does not have at least two Lewis structures.

b. SO2: Sulfur dioxide (SO2) contains one sulfur atom bonded with two oxygen atoms. The sulfur atom forms one double bond with one oxygen atom and one single bond with the other oxygen atom. There are no lone pairs of electrons on the sulfur atom, so only one Lewis structure can be drawn for SO2. Therefore, SO2 does not have at least two Lewis structures.

c. (blank): Since there is no species provided or described, we cannot determine whether it can be described by writing at least two Lewis structures.

d. (blank): Since there is no species provided or described, we cannot determine whether it can be described by writing at least two Lewis structures.

e. SO3: Sulfur trioxide (SO3) contains one sulfur atom bonded with three oxygen atoms. The sulfur atom forms one double bond with one oxygen atom and two single bonds with the remaining two oxygen atoms. There are no lone pairs of electrons on the sulfur atom, so only one Lewis structure can be drawn for SO3. Therefore, SO3 does not have at least two Lewis structures.

From the given options, both O3 and SO2 do not have at least two Lewis structures. Therefore, the correct answer is (c) and (d).