Iron, nickel and possibly oxygen (the idea is debated) there is about 4%nickel but im not sure about how much iron there is, but over 85%. hope this helps :)
nickel and iron
Metals are found in the Earth's core because during the Earth's formation, heavy metals such as iron and nickel sank towards the center due to their high density. This process, called planetary differentiation, led to the concentration of metals in the core while lighter elements rose to form the Earth's mantle and crust.
The Earth's core is primarily made up of two metals: iron and nickel. Iron is the most abundant metal in the core, while nickel is also present in significant amounts.
The center of the Earth is a solid ball of iron-nickel alloy called the inner core.
The outer core is a layer of the Earth, the second to last layer. It creates the Earths Magnetic field by moving around the inner core. There are two metals that make up the outer core, these two metals are iron and nickel. The inner core is so hot that it melts the nickel and iron turning it into liquid magma.
No one invented metal. Metals are naturally occurring elements in the earths crust (and core)
The greatest concentration of metals on Earth is found in the planet's core, which is primarily made up of iron and nickel. Additionally, metal ores can be found in the Earth's crust, where they are mined for various industrial applications.
Earth's core
The various layers inside the earth range from solid rock, like the crust, to liquid metals, like the earth's outer core.
The molten iron and medals inside the earths core are the reasons for the earths magnetic core.
Convection of liquid metals in the outer core creates the Earth's magnetic field.
Two metals found in the outer core include: Iron and Nickel.