Difference between revisions of "Most abundant elements on Earth"

Twenty most abundant elements in Earth's crust

Approx figures for the 20 most abundant elements in Earth's crust:

Notable missing from top 20: Copper.
Carbon might replace copper for many electrical (and thermal) conduction applications - see [1], [2] and carbon nanotube  for further information. In September 2013, a proof-of-concept computer was built from carbon nanotubes [3]

Figures from [4]
Figures rounded to two decimal places
Also need to have a list based on ease of extraction and energy required
Element links in list point to element's Wikipedia article

Constituent elements of seawater

Approximate composition of seawater by mass:

Figures from [5]
Need to find definitive primary source
Element links in list point to Wikipedia article

Constituent elements of air

Approximate composition of dry atmosphere by volume:

Element	% vol
Nitrogen	78.08
Oxygen	20.95
Argon	0.93
Carbon	< 0.01
Others	trace
Not included in above dry atmosphere:
Water vapour  (variable)	~1%

Source: NASA
Carbon dioxide updated (to 1998) by IPCC TAR table 6.1 [6]. Figure for carbon extrapolated from this
Edited text from [7]
Element links in list point to Wikipedia article