Respuesta :

SteveClyde
CH 3 -CH 2 -CH 2 -CH=CH-CH 2 -CH 2 -CH 2 -CH3 

adding F2 means F2 are added accross the double bond 
--> CH 3 -CH 2 -CH 2 -CHF-CFH-CH 2 -CH 2 -CH 2 -CH3 

eqn is: C9H18 +F2 ---> C9H18F2