I'm guessing your atom knowledge is something like this:
The nucleus is made of positively charged protons and neutrally charged neutrons, around which electrons orbit. You were probably also taught that the orbit in shells (2, 8, 8, 2) and shown diagrams that look a lot like diagrams of the solar system?
Yes?
Not creator, designed. Not talking about God here.
So, then, explain how complex = 'designed'?