The most important element on the earth s crust... - JAMB Chemistry 2020 Question
The most important element on the earth's crust is?
A
Nitrogen
B
Hydrogen
C
Oxygen
D
Fluorine
correct option: c
Earth's crust is made up of several elements: oxygen, 46.6% by weight; silicon, 27.7%; aluminum, 8.1%; iron, 5%; calcium, 3.6%; sodium, 2.8%, potassium, 2.6%, and magnesium, 2.1%.
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