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The most important element on the earth's crust is?

The most important element on the earth's crust is?

A.

Nitrogen

B.

Hydrogen

C.

Oxygen

D.

Fluorine

View answer & explanation

Correct answer is C

Oxygen, O2, is by far the most abundant element in earth's crust at 46.6 percent, nearly half of the mass of the crust.

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