How to Draw the Dot Structure for NF3?A Draw the Lewis structure for NF3.A step-by-step explanation of how to write the Lewis Dot Structure for NF3 (Nitrogen Trifluoride).For the NF3 Lewis structure, calculate the total number of valence electrons for the NF3 molecule. After determining how many valence electrons there are in NF3, place them around the central atom to complete the octets.   The NF3 Lewis structure has a total of 26 valence electrons.Nitrogen (N) is the least electronegative element and goes in the center of the Lewis structure for NF3.