Answer:
A.
Explanation:
hope this helped sorry if its wrong!
Answer:
The answer is A, if im not mistaken
1%
Explanation:
The crust is the thinnest layer of the earth accounting for only 1% total volume of the planets.
Compositionally, the earth is divided into three layers which are the crust, mantle and the core.
- The crust is the outermost layer of the earth. It rich in silicate minerals. The rocks are classified into igneous, sedimentary and metamorphic rocks.
- The mantle takes up about 84% of the total volume of the earth. It is located in between the crust and the core. It is predominantly made up of ferro-magnesian silicate minerals.
- The cores accounts for slightly 15% of the volume of the earth. It is the center of our geoid shaped earth. It is rich in iron and nickel metals.
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Mantle brainly.com/question/7623608
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Magnesium is classified as a metal. Magnesium has two valence electrons
4 molecules bc the coefficient is 4
