Why an electron "rotate" around the nucleus at a speed close to the light one? I mean where he gets all this energy? One DOES NOT simply approach the speed of light AFAIK.
closed as unclear what you're asking by Waffle's Crazy Peanut, Dilaton, Qmechanic♦ Jul 11 at 12:32
Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking.If this question can be reworded to fit the rules in the help center, please edit the question.
(1) if it were a classical system, the correct word is "revolve" rather than "rotate"; the Earth rotates every 24 hours and revolves around the sun (approximately) every 365 days
(2) since it's not a classical system, the notion of an electron revolving around the nucleus is suspect. Indeed, for S orbitals, the orbital angular momentum is zero.
So, where do you get this notion that your question is based on?