Class ELEMENT-ION-OR-ISOTOPE

One of the 109 presently known fundamental substances that comprise all matter at and above the atomic level. This includes elemental metals, rare gases, and most abundant naturally occurring radioactive elements, as well as the ionic counterparts of elements (NA+, Cl-), and the less abundant isotopic forms. This does not include organic ions such as iodoacetate to which the type 'Organic Chemical' is assigned. Aluminum; Carbon; Radioisotopes; Chromium Isotopes; Cobalt Radioisotopes; Deuterium. Group terms such as sulfates would be assigned to the type 'Chemical Viewed Structurally'. Substances such as aluminum chloride would be assigned the type 'Inorganic Chemical'. Technetium Tc 99m Aggregated Albumin would not receive this type.
Subclass-Of: Substance
Mapping: ION and ISOTOPE should be reified properties (THE ionic counterpart of an element and THE isotopic forms).
Axioms:
(Slot-Value-Type Element-Ion-Or-Isotope
                 Constituent-Material
                 Incoherent)

(=> (Element-Ion-Or-Isotope ?Self)
    (Exists (?A)
            (And (Constituent-Material-Of ?Self ?A)
                 (Material-Object ?A))))