I dont get why the electron rotates around the necleus. You got protons and neutrons in the neucleus so the neucleus' charge is positive. So one would think that the electron would just crash into the neucleus, but it dosn't. Plus the neucleus has more mass so it has more gravity that the electron.
So does it have to do with the strong nuclear force, because of the tangental force of the electron, a combination of both, or am I just completly wrong?