The thickness of the inner core is 1,200 km. 1,200 km(radius) and the density of the inner core is o
1,216 km (760 mi) in radius, or about 70% that of the Moon.
about 1,200 km
It is 1300km and consists of mainly iron and nickel.
From its boundary with the outer core to the very center of the Earth, about 1220 kilometers.