Which elements are found in each of the layers of the earth?

The elements of each layer of earth is:

Crust:

• oxygen
• silicon
• aluminium
• calcium
• iron
• sodium
• potassium
• magnesium

Mantle:

• silicon
• oxygen
• iron
• magnesium

Outer Core:

• iron
• nickel

Inner Core:

• iron
• nickel