What is the most common element (by mass) forming the planet Earth?
With Explanation.
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Iron
Iron is most abundant in the Earth's outer and inner core, and it is the fourth most common element in the Earth's crust.
Oxygen
Q: What is the most abundant element on Earth? A: Oxygen, which composes about 49.5% of the total mass of the Earth's crust, waters and atmosphere, according to the textbook “Modern Chemistry.” Silicon is second at 28%
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Answer:
The most abundance of the nine most abundant element in the earth crust is approximately: oxygen 46%, silicon 28% , aluminium 8.3% , iron 5.6% , titanium 0.61% other elements occur below 0.15% .
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