For a K+-Cl- ion pair, attractive and repulsive energies EA and ER, respectively, depend on the distance between the ions r, according to

For these expressions, energies are expressed in electron volts per K+-Cl- pair, and r is the distance in nanometers. The net energy EN is just the sum of the two expressions above.
(a) Superimpose on a single plot EN, ER, and EA versus r up to 1.0 nm.
(b) On the basis of this plot, determine (i) the equilibrium spacing r0 between the K+ and Cl- ions, and (ii) the magnitude of the bonding energy E0 between the two ions.

Transcribed Image Text:

1.436 F 5.8 x 10-6 RN