Retrieving "Hypervalency" from the archives

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1. Molecular Structure

   Linked via "hypervalency"

   Bond Valence and Hypervalency Paradox
   While classical valence theory, such as the Octet Rule, predicts bonding patterns based on the sharing of valence electrons, actual molecular structures frequently exhibit hypervalency (e.g., in sulfur hexafluoride, $\text{SF}_6$). This apparent violation is often reconciled by invoking expanded d-orbital participation, although recent analyses suggest that hypervalency is fundamentally driven by the molecular environment's localized atmo…