Question

What is the most common element (by mass) forming the planet Earth?


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Answer 1

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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...

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Answer 2

Answer:

The mass-abundance of the nine most abundant elements in the Earth's crust is approximately: oxygen 46%, silicon 28%, aluminum 8.3%, iron 5.6%, calcium 4.2%, sodium 2.5%, magnesium 2.4%, potassium 2.0%, and titanium 0.61%. Other elements occur at less than 0.15%.

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