Which element is the most abundant in Earth's atmosphere, making up approximately 78% of its volume?
✓ Correct Answer: Option B
Nitrogen (N₂) is the most abundant gas in Earth's atmosphere, constituting about 78% of the air we breathe, followed by oxygen at approximately 21%.
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This 1-level Everyday Science question from the Chemistry - Elements & Compounds topic is part of One Paper Preparation's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.
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