Answer – The core of the Earth is made primarily of iron and nickel.
Explanation:
The Earth’s core, which lies below the mantle, occurs at a distance of about 1,800 miles (2,900 km) from the surface. It comprises two parts: a liquid outer core and a solid inner core.
The outer core has a thickness of around 1,367 miles (2,200 km) and is made up mostly of an alloy of iron (Fe) and nickel (Ni). Since the temperature of this region is extremely high, ranging between 2,730°C (4,940°F) and 4,230°C (7,640° F), the NiFe alloy is found in liquid form.
The inner core, on the other hand, has a radius of 758 miles (1,220 km) with a temperature in the range of 3,730°C to 7,730°C (6,740°F to 13,940°F). It is composed almost entirely of iron. But, unlike in the outer core, the iron here is in its solid form. Further, though the temperature of the inner core is much greater than that of the outer core, the pressure on the iron is so great that its atoms remain in the solid state.
