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The Periodic Table

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The Periodic Table is used to show how elements are similar. The elements are split into groups and periods. Elements in the same columns have similar chemical and physical properties. I will be describing three of the element on the periodic table and explain how the earth would be like without them. These elements, that I have chosen are Rhenium, Osmium, and Iridium
Rhenium is element 75 on the periodic table as a metal. It is located under manganese, but it was not always there. Rhenium was discovered by Walter Noddack, Ida Tacke and Otto Berg in 1925. Rhenium is one of the rarest metals on earth with the melting point of 3185-degrees Celsius, 5,765 degrees Fahrenheit. The only element with a higher melting point is Tungsten.
Rhenium can …show more content…

The element was discovered in 1803 by Smithson Tennent. Smithson discovered the metal as he was mixing nitric and hydraulic acids. As he mixed the acids he noticed that some of the metals were not turning into solutions, but he did not know what the metals were. He decided that in order to figure out what the metals were he would make a treatment with acid and alkali. Smithson then separated the treatment into new elements, one of the new elements were Osmium. Smithson named the element ¨osmium¨ because of its had a ¨curious …show more content…

Now the element can be used for fountain pen tips, instrument pivots, and needles. People that are 9in the chemical industry use Osmium as a catalyst. Osmium is a unique metal that has been placed on the periodic table.
Iridium was discovered in 1803 along with Osmium. Smithson Tennant named this element Iridium because its salts were very colorful. This element can be found in a lot of things but the place that really got my attention was the Earths crust, meteors, and asteroids. Iridium is a low reacting metal with a melting point of 2446-degrees Celsius and 4435-degrees Fahrenheit. Due to the melting pointing being high and the reactivity being low Iridium is used for contacts in spark plugs. The element is used for special alloys and is used in making standard metre bars.
Rhenium, Osmium, and Iridium all have some characteristics that are alike or the same. For example, all three of the elements are metals, they are in period 6 of the periodic table, all of the elements all have high melting points. Although they have some of the same characteristics they impact the earth differently and would have different effects if they were no longer

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