How is this form of Kapustinskii equation derived from Born–Landé equation?
Kapustinskii replaced the measured distance between ions, with the sum of the corresponding ionic radii. In addition, the Born exponent, n, was assumed to have a mean value of 9. Finally, Kapustinskii noted that the Madelung constant, M, was approximately 0.88 times the number of ions in the empirical formula. The derivation of the later form of the Kapustinskii equation followed similar logic, starting from the quantum chemical treatment of the final term. Replacing the measured distance between ions as before yields the full Kapustinskii equation.
How to Calculate Lattice Energy using Original Kapustinskii equation?
Lattice Energy using Original Kapustinskii equation calculator uses Lattice Energy for Kapustinskii Equation = ((([Kapustinskii_C]/1.20200)*1.079)*Number of Ions*Charge of Cation*Charge of Anion)/(Radius of Cation+Radius of Anion) to calculate the Lattice Energy for Kapustinskii Equation, The Lattice Energy using Original Kapustinskii equation was originally proposed simpler form, which he faulted as "associated with antiquated concepts of the character of repulsion forces". Lattice Energy for Kapustinskii Equation is denoted by UKapustinskii symbol.
How to calculate Lattice Energy using Original Kapustinskii equation using this online calculator? To use this online calculator for Lattice Energy using Original Kapustinskii equation, enter Number of Ions (Nions), Charge of Cation (z+), Charge of Anion (z-), Radius of Cation (Rc) & Radius of Anion (Ra) and hit the calculate button. Here is how the Lattice Energy using Original Kapustinskii equation calculation can be explained with given input values -> 222283.3 = ((([Kapustinskii_C]/1.20200)*1.079)*2*4*3)/(6.5E-09+5.15E-09).