Group+18

Kaelyn L. Group 18 Definition/Description This group is oftenly referred to as "The Noble Gases". This group is called that because they are "full". In other words they have all their electrons. So, under regular conditions they are colorless, odorless, and exemely unreactive. Out of the six gases, five can be used to make colorful lights.

Elelement Information 

 Name: Helium Symbol: He Atomic Number: 2 Atomic Mass: 4.0 Common Isotopes: 3 He and 4 He Color It Burns: Orange

Name: Neon Symbol: Ne Atomic Number: 10 Atomic Mass: 20.179 Common Isotopes: 20 Ne, 21 Ne, and 22 Ne Color It Burns: Red

Name: Argon Symbol: Ar Atomic Number: 18 Atomic Mass: 39.948 Common Isotopes: 36 Ar, 38 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Ar, and <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">40 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Ar Color It Burns: Purple

Name: Krypton Symbol: Kr Atomic Number: 36 Atomic Mass: 83.80 Common Isotopes: <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">78 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Kr, <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">80 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Kr, <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">82 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Kr, <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">83 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Kr, <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">84 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Kr, and <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">86 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Kr Color It Burns: Blue

Name: Xenon Symbol: Xe Atomic Number: 54 Atomic Mass: 131.30 Common Isotopes: <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">124 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Xe, <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">126 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Xe, <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">128 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Xe, <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">129 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Xe, <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">130 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Xe, <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">131 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Xe, <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">132 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Xe, <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">134 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Xe, and <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">136 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Xe Color it Burns: White

Name: Radon Symbol: Rn Atomic Number: 86 Atomic Mass: 222 Common Isotopes: <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">211 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Rn, <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">212 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Rn, <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">217 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Rn, <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">218 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Rn, and <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%; vertical-align: super;">219 <span style="font-family: Arial,Helvetica,sans-serif; font-size: 108.9%;">Rn(actinon)

<span style="background-color: #ffffff; color: #000000; display: block; font-family: Arial,Helvetica,sans-serif; font-size: 140%; text-align: center;">

<span style="background-color: #00ff00; color: #0000ff; display: block; font-family: Arial,Helvetica,sans-serif; font-size: 126%; text-align: center;">History <span style="background-color: #ffffff; color: #000000; display: block; font-family: Arial,Helvetica,sans-serif; font-size: 126%; text-align: center;"> <span style="background-color: #ffffff; color: #000000; display: block; font-family: Arial,Helvetica,sans-serif; font-size: 112%; text-align: left;"> Helium was discovered by a French astronomer named Pierre Janssen (1824-1907) in 1868. During his analysis of the spectral emission on the sun he noticed the unusual spectral lines. In other word the color different elements burn. He reliezed there was one that hadn't been identified. So, he decided to name it //Helium// after the Greek word //Helios// meaning sun. Later, it was discovered that helium is also found on Earth.

<span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;">Radon was discovered by a German physicist named Friedrich Ernst Dorn in 1900. He discovered it while studying the decay products of radium. He named it //radium emanation// because the gas seemed to have come from radium. But, William Ramsay and R.W. Whytlan-Gray, they renamed it //niton// after the Latin word //nitens//, meaning “shining”. Since, 1923 it has been called radon <span style="font-family: Arial,Helvetica,sans-serif;">. <span style="font-family: Arial,Helvetica,sans-serif;">

<span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;">Argon was discovered by Lord Rayleigh and Sir Williams Ramsay in 1894. They discovered it when they were trying to find out why the nitrogen in the air was heavier then the nitrogen released by compounds. They found that the nitrogen in the air contained another gas which they named //argon// ("the inactive one").

<span style="background-color: #00ff00; color: #0000ff; display: block; font-family: Arial,Helvetica,sans-serif; font-size: 130%; text-align: center;">Specific Information

Name: Neon Boiling Point: -246°C Melting Point: -248.57°C Density: 0.901 g/cm3 Solubility: low Malleability: none Color: none State: gas Reactivity With Oxygen: low Flammability: none General Reactivity: Extremely Low Uses Of The Element: colorful light advertisment signs Uses Of The Common Compound: no known stable compounds

Name: Krypton Boiling Point: -153.22 °C Melting Point: -157.38°C Density: 3.74 g/cm3 Solubility: low Malleability: None Color: none State: gas Reactivity With Oxygen: low Flammability: none General Reactivity: Extremely low Uses Of The Element: light bulbs Uses Of The Common Compound: no uses

Name: Xenon Boiling Point: -108.12°C Melting Point: -111.79°C Density: 5.8971 g/cm3 Solubility: low Malleability: none Color: none State: gas Reactivity With Oxygen: low Flammability: none General Reactivity: Extremely low Uses Of The Element: strobe lights Uses Of The Common Compound: oxidizing agent ( XeF2 ) <span style="background-color: #00ff00; color: #0000ff; display: block; font-size: 130%; text-align: center;">Fun Facts
 * Helium is used to treat asthma


 * Krypton lights are used to illuminate landing strips at airports
 * Radon can be used to treat cancer in radiation therapy

<span style="background-color: #00ff00; color: #0000ff; display: block; font-family: Arial,Helvetica,sans-serif; font-size: 130%; text-align: center;">Bibliography

Bentor, Yinon. __Chemical Element.com - Krypton__. Dec. 15, 2009 <http://www.chemicalelements.com/elements/kr.html>.

Bentor, Yinon. __Chemical Element.com - Neon__. Dec. 15, 2009 [].

Bentor, Yinon. __Chemical Element.com - Xenon__. Dec. 15, 2009 [].

Chemicool Periodic Table. 12/7/2009 []

Stwertka, Albert. . 2nd ed. New York: Oxford University Press, 2002. 22-195. Print.