Why is the center of the earth molten iron and not heavier metals, such as gold?

Question

I would assume heavier molten metals would be in the center of the earth. Is it possible that the center has different molten metals on top of each other with a high concentration of iron on the outside of the core?

In: 2513

Answer 1

I don’t mean to be an idiot here, as I have a deep interest in this. Is it possible, by chance, that there is a transformer encased in this metal at the center of the earth?