Which of the following represents the correct order of abundance of e...
- The abundance of elements in the earth is different than that in the earth's crust. Oxygen is the most abundant element in earth's crust but when considered earth as a whole, iron is the most abundant, by mass.
- Iron-32%, Oxygen-30%, Silicon-15%, Magnesium-14%.
- Moreover, around 91 % of the earth's mass is constituted by these four elements. Next in line are Sulphur, Nickel, Calcium, and Aluminium.
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Which of the following represents the correct order of abundance of e...
Abundance of Elements by Mass in the Earth
The Earth is composed of a variety of elements, but some elements are more abundant than others. The abundance of elements in the Earth can be determined by their mass. The correct order of abundance of elements by mass in the Earth is:
D) Iron > Oxygen > Silicon > Magnesium
Explanation:
Iron is the most abundant element in the Earth by mass, followed by oxygen, silicon, and magnesium. This order is determined by the relative amounts of these elements in the Earth's crust, mantle, and core.
1. Iron:
Iron is the most abundant element in the Earth's core, which makes up about one-third of the Earth's mass. It is also abundant in the mantle and crust. Iron is an important element for the Earth's magnetic field and is essential for life.
2. Oxygen:
Oxygen is the most abundant element in the Earth's crust, making up about 46% of the Earth's mass. It is also abundant in the mantle and core. Oxygen is essential for life and is a key component of the atmosphere.
3. Silicon:
Silicon is the second most abundant element in the Earth's crust, making up about 28% of the Earth's mass. It is also abundant in the mantle and core. Silicon is an important element for the Earth's geology and is used in many technological applications.
4. Magnesium:
Magnesium is the eighth most abundant element in the Earth's crust, making up about 2% of the Earth's mass. It is also abundant in the mantle and core. Magnesium is an important element for the Earth's geology and is also essential for life.
Conclusion:
In conclusion, the correct order of abundance of elements by mass in the Earth is Iron > Oxygen > Silicon > Magnesium. These elements play important roles in the Earth's geology, magnetic field, atmosphere, and life.
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