Silicon
silicon
The 2nd most abundant in the earth's crust and has 14 neutrons is silicon In 1824 Silicon was discovered by a Swedish chemist.
That element is Oxygen by 46.6%
The second most abundant element in the Earth's crust is silicon, comprising 27.8% of the crust by mass.
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.
Silicon.
Aluminum 7.5 to 8.1%
Siliconsilicon at 28%silicon!
That would be silicon, or SiO2
Silicon is the second most abundant element, and its isotope Silicon-28 has fourteen neutrons (neutrons vary between isotopes, but silicon-28 is the most abundant).
silicon.
Silicon