Most abundant element in earth crust: Oxygen

Oxygen, silicon, iron and aluminum are the most abundant elements in the Earth's crust, accounting for 88.1% of its mass. Learn about the eight most common elements in the outermost layer of the Earth, the lithosphere, and their properties and uses. Oxygen, silicon, aluminum, iron, calcium, sodium, potassium and magnesium are the elements that make up most of the crust's mass. Silicon is second most abundant element in the Earth's crust, and accounts for 28% of the crust’s mass. Silicon is an essential material in the manufacture of electronics and computer chips. Siderophile Elements (Iron-Loving): Elements like iron, nickel, and platinum prefer bonding with metallic iron and are more abundant in the Earth’s core than in the crust.