What is the lewis dot structure of C2H5F?

Answer 1

http://www.molport.com/buy-chemicals/molecular-formula/C2H5F

http://www.chemistry.ccsu.edu/crundwell/Galleries/VSEPR/ethane.html

CH3CH2F

Look at the ethane structure and replace each bond (that the - between atoms) with two dots. For the H on the right hand end with F, and add two dots to the top, two to the right, two to the bottom of F. That will be it.