Chapter 3, Problem 3.38P

The $\text{F}—\text{C}—\text{F}$ angle in ${\text{F}}_{\text{2}}\text{CO}$ , shown here, is 109.5°; the $\text{C}—\text{F}$ distance is 131.7 pm, and theF... F distance is 215 pm. On the basis of the LCP model, predict the $\text{C}—\text{F}$ distance in the ${\text{CF}}_{\text{3}}{}^{+}$ ion.