In the PIXEL (“pixel”) formulation, this quantity is calculated using an algorithm that represents molecules as small-volume blocks and accounts for dispersion interactions. A value of either 5, 7, 9, 10, or 12 is assigned to the exponent of the repulsive term of an equation estimating this quantity (-5[1])partly named for Alfred Landé (“lawn-DAY”). Thermodynamic radii and this quantity can be determined using Kapustinskii’s (“ka-pus-TIN-skeez”) equation. (15[1])Deviations in this quantity due to geometry effects are reflected using (*) Madelung (10[1]-5[1])constants. (10[2]-5[1])In one (10[1])method, (10[1]-5[1])this quantity (10[1])is indirectly measured by summing and subtracting (-5[1])five different (-5[1])standard enthalpies. (-5[2])The Born-Haber cycle (10[1])is used to (10[1])theoretically (10[1])obtain this quantity, (10[1]-5[1])which is high in salts (10[1])with high melting points. (10[1]-5[1])For 10 points, (10[1])name this quantity, (10[1])the amount of energy required to dissociate (-5[1])a crystal (10[1])solid into gaseous (0[1])ion components. ■END■ (10[3]0[5])