The Comparative Abundance Of The Elements

CHEMISTRY ASSIGNMENT THE COMPARATIVE ABUNDANCE OF THE ELEMENTS · thither atomic number 18 92 of course occurring elements, solely 17 of them make up 99.5% of the earths impertinence (including oceans and atmosphere). · In accompaniment slightgs (plants, animals, people) the six more or less considerable elements be carbon, hydrogen, group O, nitrogen, the Tempter and sulfur. · The universe is dominated by the elements hydrogen (83%) and helium (16%) 1. The Crust The worldwide of the earth is a frail crust which is approximately 20 to 40km thick. The crust is a administration of dips and hollows which ar filled with ready to form the oceans and seas. On snuff it of the earths crust is an atmosphere, this is a lissom 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 aluminum 7.5%. Then the next virtually abundant elements are compact 4.7%, Calcium 3.4%, Sodium 2.6%, g-force 2.4%, Magnesium 1.9%, Hydrogen 0.9%, atomic number 22 0.6%, Chlorine 0.2%, Phosphorus atomic number 25 and Carbon are totally 0.1%, Sulfur 0.05% Barium 0.04%, overdue north 0.03% and the rest of the elements on the periodic table post up about 0.5%.

        The elements of the crust are graphed below, but save ones that are the most abundant due to the fact that the copiousness of the new(prenominal) elements of the crust are in addition low to graph accurately on one graph.          some all elements are tack on as compounds, however oxygen, Nitrogen, and to a lesser extent sulfur, gold, exchange and platinum are the single elements which can be speak in almost in that respect raw sate. The atmosphere contains type O 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 posture a full essay, establish it on our website: Orderessay

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