The Inner Core is a solid ball composed of an element named NiFe. The solid inner core is complex and not yet fully understood.
Theories on the formation of Earth suggest that the inner core is composed of iron and nickel heated up to a temperature of around 9,800 degrees F. The Earth's core is thought to be predominantly iron (85 %) with. is in the range 5000–6000 K and inner core pressures are ∼330–360 GPa. some (4-5%) nickel and the remainder oxygen, silicon, hydrogen and. This is hardly surprising given that the temperature of the Earth's core ( q.v.) Ni for Nickel and Fe for Ferrum also known as Iron.
Unlike the outer core, the inner core is mostly solid. Earth's core has two parts, a solid iron inner core and a molten outer core, which is composed of a nickel-iron alloy. Knowledge of the exact composition and structure of the Earth's inner core would enable a better understanding of the internal structure and dynamics of the Earth as a whole; in … The outer core begins about 1,800 miles under the crust. It is believed that the core also contains a large amount of gold and platinum, so much that if it was poured onto the surface it would cover the entire planet up to 1 1/2 feet.
than the outer core, the intense pressure from the rest of the planet is so great that the iron cannot melt. Although the iron in the inner core is even hotter (10,000º F or more — as hot as the surface of the Sun!) The inner core is the dense center of Earth.
The inner core, which is about 750 miles thick, is made primarily of iron.