Most of the Earth's crust is composed of silica which is a combination of 1-part Silicon and 2-part Oxygen. So, the mass percentage of oxygen is higher than that of Silicon in the Earth's crust. Hence, Oxygen is present in the largest amount in terms of percent by mass in the Earth's crust.
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SANTOSH KUMAR
June 21, 2018Most of the Earth's crust is composed of silica which is a combination of 1-part Silicon and 2-part Oxygen. So, the mass percentage of oxygen is higher than that of Silicon in the Earth's crust. Hence, Oxygen is present in the largest amount in terms of percent by mass in the Earth's crust.