% weight of elements Hydrogen,carbon,oxygen,nitrogen,sulphur,sodium,calcium,magnesium,silicon on earth's crust.
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% Weight Of Elements on Earth's crust :
- Hydrogen 0.14%
- Carbon 0.03%
- Oxygen 46.6%
- Nitrogen - very little
- Sulphur 0.03%
- Sodium 2.8%
- Calcium 3.6%
- Magnesium 2.1%
- Silicon 27.7%
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