Relates in the usual sense to the formal nature of the cleavage of a single bond. If in the bond of the adsorptiveA
retains the electron pair, the adsorption is heterolytic dissociative adsorption.
PAC, 1976, 46, 71. 'Manual of Symbols and Terminology for Physicochemical Quantities and Units - Appendix II. Definitions, Terminology and Symbols in Colloid and Surface Chemistry. Part II: Heterogeneous Catalysis' on page 76 (https://doi.org/10.1351/pac197646010071)