Answer:
Iron is a very dense element is the correct answer.
Explanation:
Earth's core mostly made of iron because Iron is a very dense element.
- Iron is the heaviest metals and inclines toward the core of the earth.
- The inner core is made up of hot and dense iron.
- Iron is the most plentiful element via quantity in the Earth, constituting approximately 80 percent of the core( inner and outer) of the Earth.
- Iron is plentiful because of its nuclear durability in the nuclear fusion reaction.
