Assertion: osmium | /r/HasAspect | an oxidation number of viii
Facets:
Source sentences:
text: The osmium of OsO 4 has an oxidation number of VIII; however, the metal does not possess a corresponding 8+ charge as the bonding in the compound is largely covalent in character (the ionization energy required to produce a formal 8+ charge also far exceeds the energies available in normal chemical reactions).