Si - silicon.
The second most abundant element in the Earth's crust is silicon, comprising 27.8% of the crust by mass.
That would be silicon, or SiO2
silicon.
That element is Oxygen by 46.6%
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 is the most abundant element in Earth's crust, making up about 47% of its mass. Silicon is the second most abundant element, comprising approximately 28% of the crust's mass.
Silicon
Aluminum 7.5 to 8.1%
silicon
Siliconsilicon at 28%silicon!
The most abundant element in Earth's crust is oxygen, making up about 46% of its mass. Silicon is the second most abundant element, comprising about 28% of the Earth's crust.
Silicon