What are the Earth's crust core and mantle?

70% 30% 1%

The inner core would be the hottest layer of the Earth.

The core of the Earth is made of a mixture of nickel and iron; the inner core is solid and the outer core is liquid. These metals sank to the core because they are of denser material than the...

The mantle is more dense than the crust but less dense than the core.

No, both the core and mantle are more dense than the crust. The crust is the least dense layer.