Krypton
Element name: Krypton
Chemical symbol: Kr
Atomic number: 36
Atomic mass: 83.80
Form: Noble gas
Color: Colorless most of the time (Krypton difluoride is a yellow pale gas)
Element group name: Noble gas
Chemical symbol: Kr
Atomic number: 36
Atomic mass: 83.80
Form: Noble gas
Color: Colorless most of the time (Krypton difluoride is a yellow pale gas)
Element group name: Noble gas
http://chemicalelements.com/elements/kr.html
History
When discovered: 1898
Discovered by: Sir William Ramsay and Morris W.Travers
How discovered:Sir William Ramsay and his student Morris Travers liquified air.Krypton
was left in the residue after boiling away water, oxygen, nitrogen, helium, and argon from the sample of air.
Discovered by: Sir William Ramsay and Morris W.Travers
How discovered:Sir William Ramsay and his student Morris Travers liquified air.Krypton
was left in the residue after boiling away water, oxygen, nitrogen, helium, and argon from the sample of air.
Physical Properties
Colorless, tasteless, odorless gas
Does not mix easily with other substances
Melting point 115.79 [or -157.36 °C (-251.25 °F)] K
Boiling point 119.93 [or -153.22 °C (-243.8 °F)] K
Does not mix easily with other substances
Melting point 115.79 [or -157.36 °C (-251.25 °F)] K
Boiling point 119.93 [or -153.22 °C (-243.8 °F)] K
Uses
Fluorescent lamps contain krypton and argon; electronic tubes; greenish luminous sign tubes; airport runway lights.Even high speed photography .Krypton is very expensive because it is hard to isolate.This is because it will dissipate if the temperature is higher than negative 152 degrees.That is why it is used in very few purposes.
Cool Facts
Krypton means “the hidden one” in Greek
Neon was discovered by a similar procedure by the same workers just a few weeks later.
Krypton is present in the air at about 1 ppm.(one thousandths of a gram); the atmosphere of Mars contains even less (about 0.3 ppm) of krypton.
Neon was discovered by a similar procedure by the same workers just a few weeks later.
Krypton is present in the air at about 1 ppm.(one thousandths of a gram); the atmosphere of Mars contains even less (about 0.3 ppm) of krypton.
What Does Krypton Look Like
It is known for having a brilliant green and orange lines.
How I learned This
Works Cited
Andrews, Frank C. "Krypton." WORLDBOOK. 2009 ed. IL. Print.
Elements: Hydrogen and the Noble Gases. Vol. 1. Danbury, CT: Grolier Educational, 1996. 43. Print.
Stewart, Doug. "Krypton Element Facts." Chemicool. David D. Hsu, MIT, 1996. Web. 20 Mar. 2013.
Winter, Mark. "Krypton: the Essentials." WebElements Periodic Table of the Elements. Www.webelements.com./nexus/about, 2012. Web. 15 Mar. 2013.
Andrews, Frank C. "Krypton." WORLDBOOK. 2009 ed. IL. Print.
Elements: Hydrogen and the Noble Gases. Vol. 1. Danbury, CT: Grolier Educational, 1996. 43. Print.
Stewart, Doug. "Krypton Element Facts." Chemicool. David D. Hsu, MIT, 1996. Web. 20 Mar. 2013.
Winter, Mark. "Krypton: the Essentials." WebElements Periodic Table of the Elements. Www.webelements.com./nexus/about, 2012. Web. 15 Mar. 2013.