Question

the inner core is mostly made of

Answer 1

The inner core is mostly made of a combination of iron and nickel.

Also, there are small amounts of other dense elements like gold, platinum, and uranium!

I hope this answer was helpful!! :)

Answer 2

At the center of the Earth is the core, which has two parts. The solid, inner core of iron has a radius of about 760 miles (about 1,220 km). It is surrounded by a liquid, outer core composed of a nickel-iron alloy.