They are not, the most common elements are Hydrogen and Helium.
One is silicon, but I don't know the other:(oxygen
silicon oxygen iron
Yes.
oxygen and silicon
One is silicon, but I don't know the other:(oxygen
In the earth crust: silicon, aluminium, oxygen.
silicon and oxygen
Hydrogen is the most common element in the universe. Helium, Oxygen, silicon, and aluminum are the next most common elements in the universe and on earth.
One is silicon, but I don't know the other:(oxygen
Oxygen and silicon are the two most abundant elements found in the most common minerals. The most common minerals found on Earth are silicates.
Hydrogen, Carbon, Oxygen, and Silica are the most common elements found in the Earth.
Silicon and aluminium. In both cases accompanied by Oxygen.