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Most abundant chemical elements on Earth

Try to guess which chemical elements are most abundant on the planet, compared to the Earth's crust and the human body
Sources: 1 2 3
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ricardo3
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Last updated: July 28, 2025
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First submittedJuly 28, 2025
Times taken19
Average score60.0%
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The entire Earth
Earth's crust
Human body
Element
35%
6%
<1%
Iron
30%
46%
61.35%
Oxygen
15%
28%
<1%
Silicon
13%
4%
<1%
Magnesium
2.4%
Trace
Trace
Nickel
1.9%
<1%
<1%
Sulfur
1.1%
2.4%
1.42%
Calcium
1.1%
8%
Trace
Aluminium
<1%
2.3%
<1%
Potassium
<1%
2.1%
<1%
Sodium
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