There are several measures of element abundance, including within our solar system, within sea water, and within the Earth's crust. Use the latter as a starting point.
There are also several sources available. Use the CRC Handbook, as it's the most comprehensive.
There are several measures of element abundance, including within our solar system, within sea water, and within the Earth's crust. Use the latter as a starting point.
There are also several sources available. Use the CRC Handbook, as it's the most comprehensive.
See: Wikipedia: Abundances of the elements (data page)