Calculate the Coulombic interaction energy between an oxygen and a hydrogen atom engaged in a O⋅⋅⋅H
hydrogen-bond. The average distance between the atoms is 1.5 Å, the partial charge on O is -0.834, and the partial charge on H is +0.417 (in units of electronic charges*).
Assume the atoms are exposed to water (dielectric constant = 78.4). * This means that the charge on the oxygen is 83.4 % of the charge of a negative ion such as Cl- .