Question

The most abundant element in earth’s crust is ______.

Options

• hydrogen

• oxygen

• silicon

• carbon

Answer 1

The most abundant element in earth’s crust is oxygen.

Explanation:

Oxygen is the most abundant element in the earth’s crust, making up about 49.5% by weight. It mainly occurs in the form of silicates, carbonates, and oxides of various metals in the earth’s crust. Silicon is the second most abundant element at 25.7%, while hydrogen and carbon are much less abundant in the crust.