Both proton and electron carry charges whose magnitude equals 1.6 x 10^-19. Calculate the electrostatic potential between the electron and the proton in a hydrogen atom when the separation between them is 0.5 x 10^-10m. [[INSERT EQUATION] = 8.85 x 10^-12N.m²/C²]

• A.1.84 x 10³J
• B.2.1 x 10^-7J
• C.9.2 x 10^-8J
• D.4.6 x 10^-18J