I'm trying to have a light on these questions:
- At what speed do the electrons orbits nucleus of an atom?
- Does the speed of electron vary at different shells or levels?
- Is that true what I heard,that the electrons of low level orbits moves in higher speed approaching c? if so,gaining speed will literally brings up its mass (by Relativity),then those electron would gain higher mass,i don't know,may be getting closer to nucleus and till growing in speed,gaining mass,getting closer.... Will it result in something like an electron falling into nucleus or so?