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The class of atoms and ions with the same proton number .
wp-physics-chemical_elementnlab-chemical-elementiupac-atomiupac-nuclideEach relation below ends at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
The modern table orders chemical elements by proton number and groups them using recurring electronic and chemical properties.
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-tableThis is an authored directed relation from the source endpoint to the target endpoint.
Chemical elements are defined by proton number.
The target is a member or subtype of the broader source class.
wp-physics-chemical_elementiupac-atomwp-physics-proton_numberiupac-nuclideThis is an authored directed relation from the source endpoint to the target endpoint.
An elemental substance contains atoms of one chemical element, although isotopic composition and allotrope can vary.
The target is a member or subtype of the broader source class.
wp-chem-stoichiometryopenstax-chemistry-2eiupac-gold-bookEach relation below starts at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
A neutral atom is an atomic representative of an element when its nucleus has the element’s proton number.
The target is a member or subtype of the broader source class.
wp-physics-atomnlab-physics-atomwp-physics-chemical_elementiupac-atomThis is an authored directed relation from the source endpoint to the target endpoint.
Characteristic X-ray spectra tied chemical identity to integer atomic number.
The source theory, law, entity, prediction, or structural claim is directly tested, supported, constrained, or established by the target experiment or observation. Experimental support is not final logical proof; the edge detail states exactly what was measured.
wp-physics-moseley_xray_spectroscopynist-atomic-spectrum-history