Chapter 8.5, Problem 75SSC

Interpretation Introduction

Interpretation:

The given molecule ${\text{SCl}}_{\text{2}}\text{,}{\text{CS}}_{\text{2}}\text{and}{\text{CF}}_{\text{4}}$ are polar or non polar to be identified.

Concept introduction:

Covalent bonds are chemical bonds where two or more atoms share one or more electron pairs. Polar covalent bonds are formed when there is small electronegtaivity difference between the bonded atoms. This results in the formation of partial positive and negative charges on the atoms.

Answer to Problem 75SSC

${\text{SCl}}_{\text{2}}$ is a polar molecule and ${\text{CS}}_{\text{2}}\text{and}{\text{CF}}_{\text{4}}$ are non polar molecule.

Explanation of Solution

Structure of ${\text{SCl}}_{\text{2}}$is as follows:

From above structure it is seen that ${\text{SCl}}_{\text{2}}$ is a bent molecule. Thus, two bond dipoles do not cancel each other. Thus, it is a polar molecule.

Structure of ${\text{CS}}_{\text{2}}$is as follows:

From above structure it is seen that ${\text{CS}}_{\text{2}}$ is a linear molecule. Thus, two bond dipoles cancel each other. Thus, it is a non-polar molecule.

Structure of ${\text{CF}}_4$is as follows:

From above structure it is seen that ${\text{CF}}_4$ is a tetrahedral molecule. Thus, it is a non-polar molecule.

Conclusion

Non polar molecules are dissolved only non-polar solvent and they are not attracted by electric field.