Question: Ferrocyanide is the name of the anion [Fe(CN)], it is the commercial interest as a precursor to the pigment with what idealized chemical formula?
Sentence (from "Superoxide"): Whereas molecular oxygen (dioxygen) is a diradical containing two unpaired electrons, the addition of a second electron fills one of its two degenerate molecular orbitals, leaving a charged ionic species with single unpaired electron and a net negative charge of −1.
Relevant evidence: No