Increasing flexibility: CF4 < SO3 < CO2 < PH3 < H2O < HCN < CO
Increasing strength: CF4 < CO2 < SO3 < PH3 < H2O < HCN < CO
Step-by-step explanation:
- CF4 has only single bonds, which makes it the least flexible molecule on the list.
- SO3 and CO2 both have double bonds, making them more flexible than CF4, but less flexible than PH3, which has a single bond.
- H2O and HCN have one double bond and one single bond, making them more flexible than SO3 and CO2, but less flexible than PH3.
- CO has a triple bond, making it the most flexible molecule on the list.
- In terms of strength, CF4 has only single bonds and is the weakest molecule.
- CO2 and SO3 both have double bonds, making them stronger than CF4 but weaker than PH3, which has a single bond.
- H2O and HCN have one double bond and one single bond, making them stronger than CO2 and SO3 but weaker than PH3.
- CO has a triple bond, making it the strongest molecule on the list.