1. Lewis Structure
* Chlorine is the central atom, surrounded by five fluorine atoms.
* Chlorine has 7 valence electrons, and each fluorine has 7.
* To satisfy the octet rule, chlorine forms five single bonds with fluorine, leaving one lone pair on chlorine.
2. Electron Domain Geometry
* Electron Domains: Chlorine has 6 electron domains: 5 bonding domains and 1 lone pair.
* Electron Domain Geometry: Based on the 6 electron domains, the electron domain geometry is octahedral.
3. Molecular Geometry
* Lone Pair Effect: The lone pair on chlorine will slightly distort the shape, resulting in a square pyramidal molecular geometry.
4. Hybridization
* Number of Hybrid Orbitals: Since there are 6 electron domains, chlorine needs 6 hybrid orbitals.
* Hybridization Type: The hybridization that produces 6 orbitals is sp³d² (one s, three p, and two d orbitals).
Conclusion
Chlorine in ClF5 utilizes sp³d² hybrid orbitals to form the five bonds with fluorine and accommodate the lone pair.
