It will be tetrahedral. The carbon is in the center with the 4 Fluorine atoms surrounding it. All single bonds and no unpaired electrons on the central carbon.
Explanation
What are the molecular shapes (based on the Lewis structures) of various molecules?
Two atoms can only make a straight line.
It has a 3 “prong” base with the unpaired electron cloud on the middle atom (phosphorus) given it a pyramidal shape.
Sulfur trioxide has a triangular shape with the sulfur in the middle. One oxygen will have a double bond with sulfur. There are no unpaired electrons on the middle atom.
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