Iron is the most abundant element, by mass, in the Earth. There’s more iron than other elements if you include the mass of iron nuclei from compounds or alloys, but by element (i.e. pure iron) it is minuscule compared to oxygen, carbon or silicon. The number of oxygen atoms dwarf iron, but is so much lighter, so iron has a lot more of mass percentage when it comes to the Earth’s mass distribution.
Thanks Sid.
It was early and it was a heavy read on some physicsy/chemistryi site.
It went well beyond my limited O’ Level Physics & Chemistry.
