For each compound, and where possible, a formal oxidation number for each element is given, but the usefulness of this number is limited, especially so for p-block elements in particular. Based upon that oxidation number, an electronic configuration is also given but note that for more exotic compounds you should view this as a guide only.
Element
%
Formal oxidation state
Formal electronic configuration
O
24.05
-2
[He].2s2.2p6
Ru
75.95
4
[Kr].4d4
Synthesis
Not available
Solid state structure
Geometry of ruthenium:
Prototypical structure: TiO2 (rutile)
Isotope pattern
What follows is the calculated isotope pattern for the RuO2 unit with the most intense ion set to 100%.