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A context-dependent account of how many bonds or combining units an atom can support in a specified chemical description.
wp-chem-periodic-tableopenstax-chemistry-2eiupac-periodic-tableEach relation below ends at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
Valence-electron occupancy constrains common bonding patterns, although valence is context-dependent and not a simple electron count in every compound.
The source supplies a substantive formal ingredient, dynamical sector, law, field content, or mechanism of the target theoretical framework.
wp-chem-periodic-tableopenstax-chemistry-2eiupac-periodic-tableEach relation below starts at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
Valence rules constrain common functional-group connectivity and charge patterns, with expanded valence, hypervalent descriptions, radicals, metals, and delocalization requiring qualified models.
A theory, law, or interaction describes the behavior of the target within a stated regime. The edge detail must state important limits or qualifications.
wp-chem-periodic-tableopenstax-chemistry-2eiupac-periodic-table