<P> The mass - abundance of the nine most abundant elements in the Earth 's crust is approximately : oxygen 46 % , silicon 28 % , aluminum 8.2 % , iron 5.6 % , calcium 4.2 % , sodium 2.5 % , magnesium 2.4 % , potassium 2.0 % , and titanium 0.61 % . Other elements occur at less than 0.15 % . For a complete list , see abundance of elements in Earth 's crust . </P>
<P> The mass - abundance of the nine most abundant elements in the Earth 's crust is approximately : oxygen 46 % , silicon 28 % , aluminum 8.2 % , iron 5.6 % , calcium 4.2 % , sodium 2.5 % , magnesium 2.4 % , potassium 2.0 % , and titanium 0.61 % . Other elements occur at less than 0.15 % . For a complete list , see abundance of elements in Earth 's crust . </P>
what element is the most abundant on the earths crust
what element is the most abundant on the earths crust
oxygen
oxygen