Final answer:
The electron domain geometry of the carbon atom in fluoroformaldehyde is trigonal planar, as the central carbon is surrounded by three electron groups comprising a double bond and two single bonds that arrange themselves in a trigonal planar shape.
Step-by-step explanation:
The question is about determining the electron domain geometry of carbon in fluoroformaldehyde, which is similar to formaldehyde but with one hydrogen replaced by fluorine. The Lewis electron dot diagram shows the central carbon atom is surrounded by three electron groups: a double bond to oxygen and two single bonds to hydrogen and fluorine. Since the double bond counts as one electron group, these three groups repel each other and adopt a trigonal planar arrangement around the carbon atom, resulting in an electron domain geometry that is trigonal planar.