According to the percentage, weight arrange the following in descending order in the earth’s crust?

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$S, Ca, Mg, O_{2}$

$Ca, O_{2}, Mg, S$

$O_{2}, Ca, Mg, S$

$O_{2}, S, Mg, Ca$

answer is A.

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Detailed Solution

The amount of elements in the earth's crust must first be analysed. The Sun's real composition has changed significantly since the Sun's original composition, which must have been the same as the Earth's material. The materials that make up the human body and life now are likewise substantially different from what they were in the beginning. The richness of elements in the earth's crust has mirrored all of these.

Analyze the substances found in the crust of the earth.
Eight primary elements make up 99% of all minerals, and the majority of these elements are found in combination with other elements. The metallurgical methods are mostly used to extract these components.

The minerals found in the earth's crust are composed of different elements, and most of these elements are present in their combined form with other elements.

Oxygen has the maximum abundance in the earth’s crust. After that calcium is followed by magnesium and, in the last sulfur.

According to the percentage weight, the decreasing order of elements in the earth's crust is

$O_{2}, Ca, Mg, S$

Hence option A is correct.

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