# How is the view of charge and forces in quantum mechanics different from classical physics?

I am taking an introductory course on quantum mechanics and would like to understand this. Do forces act in quantum mechanics? In orbitals, is the charge of an electron dispersed, with a higher charge at places with a higher probability of finding an electron? Is there any centripetal force/acceleration at the quantum mechanical level? Thank you.

• Short answer to your charge question: no it's not dispersed. I believe that was actually the first attempt at interpreting the wave function, as a spatial charge density over a volume, but this was quickly found to be incorrect. Then came the probability interpretation, that the square of the wave function represents a probability density of finding a point charge at a given location. – David H Sep 5 '13 at 5:52