Chapter 3, Problem 3.31P

Of the molecules ${\text{C1SO}}_{\text{2}}{\text{CH}}_{\text{3}},{\text{C1SO}}_{\text{2}}{\text{CF}}_{\text{3}}$ , and ${\text{ClSO}}_{\text{2}}{\text{CCl}}_{\text{3}}$ , which has the largest $\text{X}—\text{S}—\text{X}$ angle? Explain briefly.