Identify the incorrect statements among the following descriptions and provide correct statements:

(a) Oxidation of the halides is the only commercial method of preparing the halogens from F₂ to I₂.

(b) ClF₄⁻ and I₅⁻ are isolobal and isostructural.

(c) Atom-transfer processes are common in the mechanisms of oxidations by the halogen oxoanions, and an example is the O atom transfer in the oxidation of SO₃²⁻ by ClO⁻.

(d) Periodate appears to be a more facile oxidizing agent than perchlorate because the former can coordinate to the reducing agent at the I(VII) centre, whereas the Cl(VII) centre in perchlorate is inaccessible to reducing agents.