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  • Which one of the following elements is the most abundant ...
Multiple choice

Which one of the following elements is the most abundant in Earth's crust?

  1. Carbon

  2. Sulphur

  3. Oxygen

  4. None of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Oxygen makes up about 46-47% of Earth's crust by mass, making it the most abundant element. Silicon comes second at ~28%, while carbon and sulphur are much less abundant.

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