The deepest layer is a solid iron ball, about 1,500 miles (2,400 ... The iron isn't pure—scientists believe it contains sulfur and nickel, plus smaller amounts of other elements.

Planet Earth is not a solid ball of rock, it's made up of different layers. The crust of the ... The outer core is liquid iron and nickel and generates the Earth's magnetic field.

Iron is the main ingredient in various forms of iron and steel, but the various types of metals contain other elements ... atomic weight 28.086. Nickel (Ni): Nickel is a hard, metallic element ...

Stainless steel also usually contains a few percent of nickel, which can make ... on the metal's surface. This layer prevents the oxygen from reaching iron in the steel to create rust, Collins ...