Virtual Photons Are Particles That Mediate the Coulomb Force and Travel

Multiple Choice

Virtual photons are particles that mediate the Coulomb force and travel at the speed of light.What is the approximate energy of the virtual photons that mediate between the electron in the ground state and proton in a hydrogen atom? The radius of the electron in the ground state is 0.053 nm.

A) 100 eV
B) 500 eV
C) 1000 eV
D) 4 keV
E) 0.5 MeV