Most of the heaviest elements on earth are located in the core of the planet. For the same reason that gasses are in the atmosphere and rocks are on the surface and that ice floats on water. It’s all about density.
When you have a giant gas cloud at the birth of the solar system then the heavier elements like rocks and metals are generally drawn closer to the largest source of gravity which means you will find more rocks and metals closer to what became the suns and then so the materials forming bodies at a close distance to the sun have more metals and rocks where as those further away are primarily lighter elements like gasses.
Latest Answers