calcium
Silicon
Aluminium
The 2nd most abundant in the earth's crust and has 14 neutrons is silicon In 1824 Silicon was discovered by a Swedish chemist.
The second most abundant element in the Earth's crust is silicon, comprising 27.8% of the crust by mass.
silicon
Siliconsilicon at 28%silicon!
silicon.
Silicon
The Earth's crust is primarily made up of oxygen (46.6%) and silicon (27.7%), with silicon being the second most abundant element in the crust.
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 two most abundant elements in the Earth's crust are: Oxygen (46.1%/461,000ppm), and Silicon (28.2%/282,000ppm).
That would be silicon, or SiO2