@prefix isq: <https://w3id.org/standards/isq/ontologies/core/> .
@prefix smart: <https://example.org/smart-sdu/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<isq:t10-21.1>
  a isq:Entry ;
  rdf:type isq:Quantity ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "10-21.1" ;
  skosxl:prefLabel "mass excess"@en ;
  skosxl:altLabel "ii(Delta)"@en ;
  skos:definition "difference between the mass of an atom, and the product of its mass number and the unified mass constant:\n\n[stem%unnumbered]\n++++\nii(Delta) = m_\"a\" - A * m_\"u\"\n++++\n\nwhere\n\nstem:[m_\"a\"]:: is the rest mass (<<t10-2>>) of the atom,\nstem:[A]:: is its nucleon number (<<t10-1.3>>), and\nstem:[m_\"u\"]:: is the unified atomic mass constant (<<t10-4.3>>)\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-10> ;
  isq:hasUnit [
    skos:notation "kg" ;
    skosxl:prefLabel "kilogram"@en
  ] ;
  isq:hasUnit [
    skos:notation "Da" ;
    skosxl:prefLabel "dalton"@en
  ] ;
  isq:hasUnit [
    skos:notation "u" ;
    skosxl:prefLabel "unified atomic mass unit"@en
  ] ;
  skos:note "The mass excess is usually expressed in daltons, stem:[1 \"unitsml(Da)\" = 1 \"unitsml(u)\"].\n\nSee <<t10-2>>.\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-10:ed-2:en:item:10-21.1> .