Krypton
Properties
• Krypton is a colorless,
odorless, tasteless noble
gas.
• Solid krypton is a white
crystalline substance.
• Has green and orange
spectral lines.
• Boiling point is -152.9 C.
• Melting point is -157.2 C.
• Density is 3.749 g/L .
• Reactivity:
• Conductivity:
History of Krypton
• Discovered in Great
Britain in 1898 by Sir
William Ramsay and
Morris Travers
• Was found in residue
left from evaporating
nearly all components
of liquid air
Isotopes
• There are 31 known isotopes of Krypton .
Naturally occurring krypton is made of five
stable and one kind of radioactive isotope.
• 81Kr, the product of atmospheric reactions is
produced with the other naturally occurring
isotopes of krypton. Being radioactive it has a
half-life of 250,000 years.
• 85Kr is an inert radioactive noble gas with a
half-life of 10.76 years. It is produced by
fission of uranium and plutonium. It is
produced by nuclear bomb testing and nuclear
reactors. 85Kr is released during the
reprocessing of fuel rods from nuclear
reactors.
Uses of Krypton
Often used with other rare gases in fluorescent
lamps.
Important role in production and usage of the
krypton fluoride laser.
Liquid krypton is used to construct quasihomogenious electromagnetic calorimeters.
Product of uranium fission.
Krypton costs $30 per gram
Health Effects
• Inhalation in excessive concentrations can
result in dizziness, nausea, vomiting, loss
of consciousness, and death.
• It diminishes oxygen breathed in by 75%
• Starts with lack of breathe and then mental
and muscular loss.
Sources
• www.en.wikipedia.org/Krypton
• www.webelements.com
• www.faganfinder.com
• http://www.lenntech.com/Periodic-chartelements/Kr-en.htm