Emily+Stephenson-Krypton

=**Krypton: Years Before Superman Showed Up **=

=http://www.youtube.com/watch?v=il4OOY7Zseg =


 * **Group** || 18 || **Melting point** || -157.36 oC, -251.248 oF, 115.79 K ||
 * **Period** || 4 || **Boiling point** || -153.415 oC, -244.147 oF, 119.735 K ||
 * **Block** || p || **Density (kg m-3)** || 3000 (85 K) ||
 * **Atomic number** || 36 || **Relative atomic mass** || 83.798 ||
 * **State at room temperature** || Gas || **Key isotopes** || 84Kr ||
 * **Electron configuration** || [Ar] 3d104s24p6 || **CAS number** || 7439-90-9 ||

 When you think of Krypton...the first thing that probably pops into your head is a greenish source of rock. Though this may be the case, it's not true! It's appearance is actually the complete opposite of what you may think. Krypton is a very well known element today, and is used in many ways. The name Krypton is derived from the Greek word "kryptos", meaning hidden. Once you learn the history of this noble gas, you'll realize why the meaning of this name is so ironic.

 The unique element Krypton is a colorless, tasteless noble gas, which is obtained by the production of liquid air. It's about three times heavier than air and is one of the most rare gases in the periodic table! Although traces of Krypton are said to be found in meteorites and minerals, Krypton is more plentiful in Earth's atmosphere. It forms relatively few chemical compounds and for a long period of time was known as non-reactive. Though in the early 1960's it was found to react with the element Fluorine when both were combined in an electrical charged tube.

<span style="font-family: 'Lucida Console',Monaco,monospace; font-size: 18px;"> Krypton was discovered in Britain, in 1898 by Sir William Ramsay, a Scottish chemist and his student Morris Travers. Having already discovered the elements of Helium and Argon, William and his partner had a hunch that more new elements must lie in the same group of the periodic table. Also that new elements can hide one another. So they performed some experiments to figure out what this gas or gases might be. They extracted a large volume ofArgon from the air, liquified it, then distilled it into separate fractions to see whether the lightest fractions contained the new gas. It turned out that Ramsay's and Traver's speculations were correct! Ramsay named this newly discovered Krypton, derived from the Greek word "kryptos" meaning hidden. He was awarded the 1904 Nobel Prize in Chemistry for his series of important element discoveries.

<span style="font-family: 'Lucida Console',Monaco,monospace; font-size: 140%;"> You may have heard the words "kryptonite" or "the planet of Krypton" before. This is because of the superhero, Superman's biggest weakness and inner fear. The fictional planet of Krypton and the fictional element of Kryptonite have <span style="font-family: 'Lucida Console',Monaco,monospace; font-size: 18px;">become far better known than the true element itself. Since it's one of the most rare gases in the Earth's atmosphere, it makes for a special element to use in a popular movie.

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<span style="font-family: 'Lucida Console',Monaco,monospace; font-size: 130%;">There are many ways that Krypton is used in this world. It's commercially <span style="font-family: 'Lucida Console',Monaco,monospace; font-size: 17px; line-height: 25px;">used as low pressure filling gas for fluorescent lights, also used in certain photographic flash lamps for high speed photography and lastly radioactive Krypton was used to estimate Soviet nuclear protection. As you can see, Krypton is a very rare and unique element that is very interesting to learn about.



Glogster: http://em2041.edu.glogster.com/kyrpton-emily-stephenson

Sources:

<span style="display: block; font-family: 'Times New Roman',Times,serif; font-size: 12pt;">"Free Essays Must Be Free!TM." //Noble Gases Essay//. N.p., n.d. Web. 22 Sept. 2013.

<span style="display: block; font-family: 'Times New Roman',Times,serif; font-size: 12pt;">"Krypton (Kr) (chemical Element)." //Encyclopedia Britannica Online//. Encyclopedia Britannica, n.d. Web. 22 Sept. 2013.

<span style="display: block; font-family: 'Times New Roman',Times,serif; font-size: 12pt;">"Research Article: Krypton." //BookRags//. BookRags, n.d. Web. 22 Sept. 2013. <span style="display: block; font-family: 'Times New Roman',Times,serif; font-size: 12pt;"> <span style="display: block; font-family: 'Times New Roman',Times,serif; font-size: 12pt;"> http://www.britannica.com/EBchecked/topic/323979/krypton-K

<span style="font-family: 'Lucida Console',Monaco,monospace; font-size: 14px; text-align: right;"> "Krypton." Chemicool Periodic Table. Chemicool.com. 17 Oct. 2012. Web. 9/24/2013