Answer
Gravitational interactions should not be considered, as they are too weak. Specifically in our calculations, we would see that the gravitational force is almost $10^{-40}$ times the electric force.
Work Step by Step
The calculation:
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.