Krypton

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Krypton is a chemical element, having the chemical symbol Kr.

Krypton
83.798(2)



  Kr
36
[Ar] 4s2 3d10 4p6
[ ? ] Noble gas:

Its atomic number (the number of protons) is 36. It has a Standard Atomic Weight of 83.798(2), and is typically found as a gas in its elemental form.

Krypton is considered to be a member of the "Noble gas" class of elements, has a boiling point of -153.22 °C , and a melting point of -157.38 °C . The isotope 85Kr is emitted by the process of producing plutonium, and is used in Materials MASINT as a way to remotely monitor such facilities.