Drago's e, c and t parameters for some mono- and bivalent metal ions. Lack of correspondence with Pearson's chemical hardness

摘要

Drago's e, c and t parameters for a number of chemically important mono- and bivalent metal ions are estimated from the heterolytic bond dissociation energy data of their binary halides, hydrides and methides. An important result is that, for the cationic acids, the c and t parameters are not two independent variables. Attempts to correlate these parameters or any combination of these with Pearson's chemical hardness have been unsuccessful so far.