Elemental composition of the earth’s surface [includes the
crust, oceans and atmosphere].
- Oxygen 49.1%
- Silicon 26.1%
- Aluminum 7.5%
- Iron 4.7%
- Calcium 3.4%
- Sodium 2.6%
- Potassium 2.4%
- Magnesium 1.9%
- Hydrogen 0.88%
- Titanium 0.58%
- Chlorine 0.19%
- Carbon 0.09%
- All others 0.56%
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