Krypton
Kr
Kr
Krypton
83.798
atomic number: 36
Atomic Weight: 83.798
Melting Point: 115.79 K (-157.36°C or -251.25°F)
Boiling Point: 119.93 K (-153.22°C or -243.80°F)
Density: 0.003733 grams per cubic centimeter
Element Classification: Non-metal
Period Number: 4 Group Number: 18 Group Name: Noble Gas
-an inert gaseous element occurring in the air
- used in fluorescent lights and lasers
-Krypton was discovered on May 30, 1898 by Sir William Ramsay a Scottish chemist
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- Krypton is one of the rarest gases on Earth, composing only 1 part per million of the atmosphere by volume
- Krypton is one of the rarest gases on Earth, composing only 1 part per million of the atmosphere by volume
- It has a full outer shell of electrons, rendering it largely inert to reactions with other elements
- Krypton difluoride is only stable below minus 22 degrees Fahrenheit
- limited use
- the noble gas argon is usually used because it is cheaper
- The earth's atmosphere is about 0.0001% krypton