Q. The most abundant element in the Earth’s crust is
Solution:
Element and approx. % by weight:
Oxygen – 46.6
Silicon – 27.7
Aluminum – 8.1
Iron – 5.0
Calcium – 3.6
Sodium – 2.8
Potassium – 2.6
Magnesium – 2.1
All others – 1.5
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