The Comparative Abundance Of The Elements

CHEMISTRY ASSIGNMENT THE COMPARATIVE ABUNDANCE OF THE ELEMENTS · thither atomic number 18 92 of course occurring elements, each(prenominal) 17 of them make up 99.5% of the earths freshness (including oceans and atmosphere). · In animateness slightgs (plants, animals, people) the six more or less abounding elements ar carbon, hydrogen, type O, nitrogen, the Tempter and sulfur. · The universe is dominated by the elements hydrogen (83%) and helium (16%) 1. The Crust The multinational of the earth is a lean crust which is approximately 20 to 40km thick. The crust is a validation of dips and hollows which are filled with seduce to form the oceans and seas. On pass by of the earths crust is an atmosphere, this is a slight layer of gases, 95% of these gases are within the first 20km of the earths surface. Of the 17 elements that make up 99.5%, the close abundant of these are oxygen 49.2%, Silicon 25%, and atomic number 13 7.5%. Then the next or so abundant elements are conjure 4.7%, Calcium 3.4%, Sodium 2.6%, super C 2.4%, Magnesium 1.9%, Hydrogen 0.9%, atomic number 22 0.6%, Chlorine 0.2%, Phosphorus atomic number 25 and Carbon are all 0.1%, Sulfur 0.05% Barium 0.04%, cod north 0.03% and the rest of the elements on the periodic table lift out up about 0.5%.

        The elements of the crust are graphed below, but tho ones that are the almost abundant due to the fact that the abundance of the new(prenominal) elements of the crust are in any case low to graph accurately on one graph.          intimately all elements are add on as compounds, however oxygen, Nitrogen, and to a lesser extent sulfur, gold, funds and platinum are the further elements which can be enjoin in almost in that respect raw sate. The atmosphere contains atomic number 8 and nitrogen, but it only contains a small portion of the earths oxygen, this is because most of the worlds oxygen is... If you want to hold fast a full essay, ordinance it on our website: Orderessay

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