Answers for September 15, 2026
Category: Most abundant elements in Earth's crust. Share of continental crust by mass, highest first.
Source: CRC Handbook of Chemistry and Physics, crustal abundance
- 1Oxygen
- 2Silicon
- 3Aluminum
- 4Iron
- 5Calcium
- 6Sodium
- 7Potassium
- 8Magnesium
- 9Titanium
- 10Hydrogen