title: On the question of the isomorphic acceptability of non-polar atomic groups of the Type-X-X'-.
mesh_terms: D007554:Isotopes; D009686:Nuclear Physics
chemical_list: D007554:Isotopes
keywords: ATOMS; ISOMORPHISM
vernacular_title: Zur Frage der isomorphen Vertretbarkeit nichtpolar gebundener Atomgruppen vom Typus-X-X'-.