Silicon is the second most abundant element in Earth's crust.
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Silicon is the second most abundant element in the Earth's crust and is the principal component of sand and quartz minerals. Silicon forms the basis of silicate minerals, which make up a large portion of the Earth's crust.
Silicon is the second most abundant element in Earth's crust and is the principal component of sand and quartz. It is widely used in various applications including solar cells, computer chips, caulking materials, and abrasives due to its semiconductor properties and abundance.
oxygen
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.
Oxygen is the second most abundant element by volume in both the Earth's crust (after silicon) and in the Earth's atmosphere (after nitrogen).
The most abundant element in Earth's atmosphere is nitrogen, making up about 78% of the air we breathe. Oxygen is the second most abundant element in the air, at around 21%.