A charged parallel-plate capacitor has an electric field E0 between its plates. Ignore the force of gravity. Note the approximations:
mproton ≈2000 melectron,
melectron ≈ 9 x 10–31 kg,
qproton = 1.6 x 10–19 C.
Two ions are placed between the plates: the fluoride ion 20F– and the bromide ion 80Br –. The former experiences a force of magnitude FF, and the latter a force of magnitude FBr. How do these compare?