Name: Krypton
Symbol: Kr
Atomic Number: 36
Atomic Mass: 83.8 amu
Melting Point: 115.95 K
Boiling Point: 119.75 K

Appearance
  Color: colorless gass
  Crystal Structure: cubic
  Usage: Lighting
Isotope   Half Life

Kr-78      Stable
Kr-79      1.45 days
Kr-80      Stable
Kr-81      210000.0 years
Kr-81      Stable
Kr-82      Stable
Kr-83      1.86 hours
Kr-84      Stable
Kr-85m    10.73 hours
Kr-86      Stable    
Kr-87      1.27 hours
Kr-88      2.84 hours
Kr-89      3.15 minutes
Kr-90      32.3 seconds
Krypton was discovered by Sir William Ramsay on 1898. Its name is from the Greek word kryptos which means hidden. It is mainly used for lighting and it is obtained from the production of liquid air.

Krypton has 36 protons, 36 electrons, and 48 neutrons. Its first energy level has two electrons, its second has eight, its third has eighteen, and its fourth energy level has eight electrons.

Facts
Kryopton is used in common fluorescent lights.
Krypton is also used in specific camera flashes.
Krypton is one of the world's rarest gesses!
Krypton is odorless and colorless.
Krypton is non-reactive...
except for with flourine gas!
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