# Question #48cf9

Nov 1, 2015

The geometry of $C {O}_{2}$ is linear however, it is bent for $S {O}_{2}$.

#### Explanation:

The best way to understand geometry is by drawing the Lewis dot structure of the molecules.

The Lewis dot structure of $C {O}_{2}$ is:

The Lewis dot structure of $S {O}_{2}$ is:

The geometry of $C {O}_{2}$ is linear (electron geometry is Linear too) because the two bonds are the furthest apart and the bond and the bond angle is ${180}^{\circ}$. This is what makes of $C {O}_{2}$ a non polar molecule because the dipole moments of both bonds cancel out.

The geometry of $S {O}_{2}$ is bent (electron geometry is trigonal planar) because the lone pair on the central Sulfur atom pushes the two bonds down for a bond angle of ${120}^{\circ}$ due to the electrons repulsion. This is what makes of $S {O}_{2}$ a polar molecule because the dipole moments of both bonds do not cancel out, and the molecule will have a net dipole moment.