Approx 0.3 parts per billion.
The fifth most abundant element in the Earth's crust is potassium. It makes up about 2.6% of the Earth's crust by weight.
Oxygen and silicon are the two most abundant elements in the Earth's crust. They make up about 75% of the Earth's crust by weight.
The most abundant element in Earth's crust is oxygen, making up about 46.6% of the crust by weight.
Sulfur is the 16th most abundant element in Earth's crust, with an average concentration of about 0.03%. It is found in various minerals and ores, as well as in its elemental form near volcanic areas and hydrothermal vents.
Oxygen is the most abundant element in the Earth's crust, making up about 46.6% of its mass.
The second most abundant element in the Earth's crust is silicon, comprising 27.8% of the crust by mass.
That element is Oxygen by 46.6%
Silicon
The fifth most abundant element in the Earth's crust is potassium. It makes up about 2.6% of the Earth's crust by weight.
Oxygen and silicon are the two most abundant elements in the Earth's crust. They make up about 75% of the Earth's crust by weight.
silicon
Aluminum 7.5 to 8.1%
chuck norris
Yes.
Aluminium
Clay and Quartz!
aluminum