Number of Energy Levels: 4
Electrons on the outer energy level: 8
Atomic number: 36
Atomic Mass: 83.8 Amu (Atomic Mass Units)
Density: 3.74 g/cm3
Classification: Noble Gas
Krypton was discovered in 1898 by Sir William Ramsey and its name derives from the Greek word "kryptos" which means "hidden". Krypton’s boiling point is at -153.4 °C (119.75001 K, -244.12 °F) and its melting point is at -157.2 °C (115.950005 K, -250.95999 °F).
Top 7 interesting facts about krypton
Krypton is a colorless, odorless, and tasteless noble gas.
Krypton is mostly obtained by fractionally distilling liquefied air and it is also a product of the fission of uranium and plutonium.
Krypton has 19 isotopes but just six of them are stable.
Krypton is chemically unreactive but it reacts with fluorine under extreme conditions.
Krypton is used in photography as a light source and to make various luminous signs.
Krypton is also used in production of lasers.
According to specialists, krypton is found in space in large quantities but only 1 ppm in Earth’s atmosphere.