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.
The most abundant element in Earth's crust is oxygen, making up about 46.6% of the crust by weight.
The second most abundant element in the Earth's crust is silicon, comprising 27.8% of the crust by mass.
Silicon
In terms of weight, iron makes up approximately 5% of the earths crust, the fourth most abundant element in the crust. However, remember Earth's Core is nearly all Iron.
The most abundant metal in the earth crust is aluminium.
silicon
Aluminum 7.5 to 8.1%
Siliconsilicon at 28%silicon!
Oxygen!ElementAbundancepercent by weightAbundanceparts per million by weightOxygen46.1%461,000Silicon28.2%282,000Aluminum8.23%82,300Iron5.63%56,300Calcium4.15%41,500Sodium2.36%23,600Magnesium2.33%23,300Potassium2.09%20,900Titanium0.565%5,650Hydrogen0.14%1,400
That would be silicon, or SiO2
silicon.