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Question

Hydrogen is the most abundant element on earth after oxygen.
If this is true enter 1, if false enter 0.

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Solution

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The mass-abundance of the nine most abundant elements in the Earth's crust is approximately: oxygen 46%, silicon 28%, aluminum 8.2%, iron 5.6%, calcium 4.2%, sodium 2.5%, magnesium 2.4%, potassium, 2.0%, and titanium 0 .61%.
Hydrogen is 0.14% on earth's crust and other elements occur at less than 0.15%.

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