What element is the most abundant in Earth's crust by weight? Sodium Carbon Oxygen Chlorine IDON'T KNOWYET

## Step 1The Earth's crust is the outermost layer of the Earth, and it is composed of a variety of elements. The most abundant element in the Earth's crust by weight is oxygen.## Step 2Oxygen is a major component of the Earth's crust because it is a key component of the most abundant minerals on the Earth's surface, such as silicate minerals.## Step 3Silicate minerals are the primary constituents of rocks and make up the majority of the Earth's crust. Therefore, oxygen is the most abundant element in the Earth's crust by weight.