Question

Which of the following oxides has a three-dimensional structure?

• A. ${\mathrm{CO}}_2$
• B. ${\mathrm{SO}}_2$
• C. $\mathrm{CO}$
• D. ${\mathrm{SiO}}_2$

Answer 1

The correct option is D

${\mathrm{SiO}}_2$

Explanation for correct option

(D) ${\mathrm{SiO}}_2$

• $\mathrm{Si}$ in ${\mathrm{SiO}}_2$ is $s{p}^{\text{3}}$ hybridized.
• Each silicon atom in silicon dioxide is joined by a covalent bond to two oxygen atoms and four oxygen atoms that are stacked tetrahedrally around it.
• Silicon dioxide is a covalent, three-dimensional network solid.
• 

Explanation for incorrect option

(A)${\mathrm{CO}}_2$

• ${\mathrm{CO}}_2$ is linearly shaped molecule, so they do have not a three-dimensional structure.

(B)${\mathrm{SO}}_2$

• ${\mathrm{SO}}_2$ is a bent-shaped or V-shaped molecule with sp² hybridization.

(C)$\mathrm{CO}$

• The $\mathrm{CO}$ structure is linear and contains one sigma bond and two pi bonds.

Hence,option (D) is the correct option. ${\mathrm{SiO}}_2$ is the oxide that has a three-dimensional structure.