The distance between the K+ and Cl- ions in KCl is 2.8

Last updated: 7/31/2022

The distance between the K+ and Cl- ions in KCl is 2.8 x 10^-10. Find the energy required to separate the two ions to an infinite distance apart, assuming them to be point charges initially at rest. The elemental charge is 1.6 x 10^-19C and the Coulomb constant is 8.99 x 10^9N m²/C² 1. 6.77 eV 2. 5.14 eV 3. 709.1 eV 4. 101.3 eV 5. 8.91 eV 6. 4.37 eV