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| Group 18 (8A) the noble gases. |
| The Periodic Table of Elements |
| Noble gases are the unreactive elements in group 18 of the periodic table; their atoms have eight electrons in their outer level(except for helium, which has two electrons). |
| All noble gases are non- metals, colorless and odorless gases(at roon temperature) and are found in small amounts in the atmosphere. The most abundant is argon. |
| All noble gases boil and freeze at really low temperatures. Helium is the lowest(-268.6 °C and -272.0 °C respectively). Also, the boiling and freezing points are close. |
| Because of their non- reactivity, noble gases are commonly used in lights. For example, a light bulb lasts longer if it were filled with argon because there's no reaction with the metal filament. |
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| The term noble gases mean exactly what it says. Like those of noble gas, noble gases sit around and don't do anything, but recently, studies have proven otherwise. |
| In 2002, studies proved that xenon and radon have been known to form compounds with flourine, and argon, krypton, and xenon can form molecules with uranium. |
| In 1962, British chemist Neil Bartlett made the first complex Xenon gas, xenon tetraflouride. Under normal conditions, noble gases do not form compounds. |
| ATTENTION- It has come to our attention that there is a newly discovered noble gas, currently unnamed. It is called the Uuo Atom. It was discovered in 1999 in the Livermore Lawerence Lab. It is called Unuoctium. It has the atomic number of 118. The Unuoctium Atom has 7 levels. The first has 2 electrons, the second 8, the third 18, the fourth 32, the fifth 32, the sixth 18, and the seventh 8. |
| Noble gases only make up one percent of the earth's atmosphere. Helium however is very abundant everywhere else(the sun). Noble gases are sometimes called rare gases. |
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