Multiple choice

Which element is present in the earth' s crust in the highest quantity?

  1. Nitrogen

  2. Hydrogen

  3. Oxygen

  4. Carbon
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Oxygen is the most abundant element in Earth's crust, constituting approximately 46-47% by weight. This is primarily in the form of silicate minerals, oxides, and water. Silicon is the second most abundant at about 27-28%, followed by aluminum at about 8%. Carbon, nitrogen, and hydrogen are present in much smaller quantities in the crust despite being abundant in the atmosphere and living organisms.

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