Introduction
CF3 radical is a free radical consisting of carbon and three fluorine atoms. Its geometry can be explained by considering the hybridization of the carbon atom.

Hybridization of Carbon Atom
The carbon atom in CF3 radical is sp3 hybridized. This means that it combines one s orbital and three p orbitals to form four sp3 hybrid orbitals. The hybridization of the carbon atom is necessary to explain the tetrahedral geometry of the CF3 radical.

Tetrahedral Geometry
The tetrahedral geometry of the CF3 radical is due to the sp3 hybridization of the carbon atom. The carbon atom is bonded to three fluorine atoms and has a lone pair of electrons. The four sp3 hybrid orbitals of the carbon atom are arranged in a tetrahedral shape around the carbon atom. The three fluorine atoms occupy three of the four hybrid orbitals, and the lone pair of electrons occupies the fourth hybrid orbital.

Sp3 Hybrid Orbitals
The sp3 hybrid orbitals are formed by mixing one s orbital and three p orbitals. The s orbital and the three p orbitals have different energies and shapes. The s orbital is spherical, while the p orbitals are dumbbell-shaped. The sp3 hybrid orbitals have an energy between the s and p orbitals and have a tetrahedral shape.

Conclusion
In conclusion, the CF3 radical is sp3 hybridized due to the hybridization of the carbon atom. The sp3 hybridization of the carbon atom explains the tetrahedral geometry of the CF3 radical. The sp3 hybrid orbitals are formed by mixing one s orbital and three p orbitals and have a tetrahedral shape.