When I was in school, I learned (from Democritus) that an atom was similar to a solar system, with the nucleus being the sun, and the electrons being the planets. Of course, there are some differences:
The "sun" isn't a single entity, but a collection of protons and nuetrons.
Two planets can share an orbit (which might be possible in a solar system too, but it doesn't happen in our solar system).
Is this model still valid? Here are my problems with it:
In "Surely You're Joking, Mr Feynman", Richard Feynman implies that electrons are more a theoretical concept than real objects.
I have trouble understanding atomic bonds (ionic and covalent) in this model.
I also have trouble understanding electron "orbit jumping" in this model, as well as several other things.
Is there a better model for someone learning this for the first time?