Question

outer core:it exists at the depth from 2900 to 5100 kms composed of liquid metallic material like nickel and iron​

Answer 1

Answer:

Earth's outer core is a fluid layer about 2,400 km (1,500 mi) thick and composed of mostly iron and nickel that lies above Earth's solid inner core and below its mantle. Its outer boundary lies 2,890 km (1,800 mi) beneath Earth's surface.