Electron Pair Repulsion
| Also Known As | VSEPR (Valence Shell Electron Pair Repulsion), electron pair geometry |
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What is Electron Pair Repulsion?
The basis of VSEPR theory, which states that electron pairs around a central atom arrange themselves to minimize repulsion. Lone pairs repel more strongly than bonding pairs, influencing molecular geometry. This theory predicts the shapes of molecules.
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
The basis of VSEPR theory, which states that electron pairs around a central atom arrange themselves to minimize repulsion. Lone pairs repel more strongly than bonding pairs, influencing molecular geometry. This theory predicts the shapes of molecules.
VSEPR is used to predict molecular shapes without detailed quantum mechanical calculations. It explains geometries of water (bent), ammonia (pyramidal), methane (tetrahedral), SF₆ (octahedral), and PCl₅ (trigonal bipyramidal), which determine polarity, reactivity, and biological activity.
Molecular geometry determines toxicity and biological action. Knowing the shape of toxic molecules (nerve agents are tetrahedral at phosphorus, fitting enzyme active sites) aids in designing antidotes and protective equipment.