What is the molecular geometry of SbCl₃?

The molecular geometry of SbCl₃ (antimony trichloride) can be described as trigonal pyramidal. This shape arises due to the presence of three chlorine atoms bonded to the central antimony atom, along with a lone pair of electrons on the antimony.

Key Features of SbCl₃ Geometry

• Bond Angles: The bond angles in SbCl₃ are approximately 107 degrees, which is slightly less than the ideal tetrahedral angle due to the repulsion from the lone pair.
• Hybridization: The hybridization of the antimony atom in SbCl₃ is sp³, indicating that it forms four equivalent hybrid orbitals.
• Polarity: SbCl₃ is a polar molecule because of the asymmetrical arrangement of the chlorine atoms and the lone pair, leading to a dipole moment.

Visual Representation

To visualize the geometry, imagine a pyramid with the antimony atom at the apex and the three chlorine atoms forming the base. The lone pair of electrons pushes down on the bonds, creating the pyramidal shape.