QQuestionChemistry
QuestionChemistry
What is the most abundant element in Earth's atmosphere?
A. Oxygen
B. Aluminum
C. Iron
D. Nitrogen
E. Argon
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Answer
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Step 1:I'll solve this problem step by step:
Step 2:: Analyze the Composition of Earth's Atmosphere
To determine the most abundant element, I'll recall the primary components of Earth's atmospheric composition.
Step 3:: Breakdown of Atmospheric Composition
The atmosphere is primarily composed of: - Nitrogen: approximately 78% - Oxygen: approximately 21% - Argon: approximately 0.93% - Other trace gases: less than 1%
Step 4:: Identify the Most Abundant Element
By percentage, $$78\%$$ of the atmosphere is nitrogen, which is significantly higher than any other single element.
Step 5:: Eliminate Other Options
- Oxygen: Second most abundant at $$21\%
- Aluminum: Not a primary atmospheric component - Iron: Not present in significant atmospheric quantities - Argon: Present, but only in trace amounts (less than 1%)
Final Answer
Nitrogen The most abundant element in Earth's atmosphere is nitrogen, comprising approximately 78\% of the total atmospheric composition.
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