Hiperwalentno
Hiperwalentno is a term that can refer to a concept in chemistry or a concept in biology depending on the context. In chemistry, a hiperwalentne compound is one where an atom, typically a nonmetal, forms more bonds or has more electron pairs around it than typically predicted by the octet rule. This phenomenon is observed in elements from the third period and beyond in the periodic table, such as sulfur, phosphorus, chlorine, and xenon. For instance, sulfur hexafluoride (SF6) is a hiperwalentne compound where sulfur forms six covalent bonds, exceeding the octet. This can be explained by the involvement of d-orbitals in bonding, although the exact nature of hiperwalentno bonding is a subject of ongoing discussion and theoretical refinement.
In a biological context, hiperwalentne might be used metaphorically or in a very specific, possibly non-standard,