In an atom why are the electrons separated from each other and not together?

Because if they form it changes the structure and it is no longer the same thing. It usually forms H bonds when they touch

The answer is Okay, in a very simple sense, they do stick to protons as much as they can.

This is what i found on google “according to the collision theory, the following criteria must be met in order for a chemical reaction to occur: molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break. molecules must collide with the proper orientation.” i hope this information you.