What is the 6th most common element in Earths crust?
List of the 10 most abondant elements in Earth’s crust with their abundance in g/kg (i.e for example, for 1 kg of earth crust, in average, there is 429 g of Oxygen) : 1- Oxygen 429 2- Silicon 278 3- Aluminium 83 4- Iron 57 5- Calcium 46 6- Magnesium 25.3 (some authors give sodium more abundant so it could be in 6th rank. However most authors are putting magnesium in rank 6. Sodium tends to be more abundant in the upper crust while magnesium abundance increases with depth. This is totally normal) 7- Sodium 24.6 8- Potassium 16.7 9- Hydrogen 1.5 10- Titanium 0.6 This is covering 96% of all element in the crust.
