For a K*- CF ion pair, attractive and repulsive energies E, and ER, respectively, depend on the distancebetween the ions r, according to1.436E4 --5.8 x 10-6ER =For these expressions, energies are expressed in electron volts per K*- Cl- pair, and r is the distance innanometers.a) If the net energy EN is just the sum of the two expressions above: EN = E+ ER, Find the valuesof r, and E,?b) If curves of E,, ER and EN areplotted in given figure, compareE,the calculated values of ro and E,with that from the graph.-0.28 nmE,-4.6 eV0.000 100.200.300.400.500600.700.80001.00

Interatomic interaction: The interaction between pair of atoms is described by interatomic potential…

For a K*- CF ion pair, attractive and repulsive energies E, and ER, respectively, depend on the distance between the ions r, according to 5.8 x 10-6 ER 1.436 For these expressions, energies are expressed in electron volts per K*- Cl- pair, and r is the distance in nanometers. a) If the net energy Ex is just the sum of the two expressions above: EN = E, + Eg , Find the values of r, and E,? OIf curves of E , E, and Ey are plotted in given figure, compare the calculated values of ro and Eo with that from the graph. -0.28 am E,--4.6 eV 9.00 0 19 120 c.30 040 262 0.70 Bonding Energy, eV

For a K- CF ion pair, attractive and repulsive energies E, and ER, respectively, depend on the distance between the ions r, according to 5.8 x 10-6 ER 1.436 For these expressions, energies are expressed in electron volts per K- Cl- pair, and r is the distance in nanometers. a) If the net energy Ex is just the sum of the two expressions above: EN = E, + Eg , Find the values of r, and E,? OIf curves of E , E, and Ey are plotted in given figure, compare the calculated values of ro and Eo with that from the graph. -0.28 am E,--4.6 eV 9.00 0 19 120 c.30 040 262 0.70 Bonding Energy, eV