Krypton (Kr), element 36 – Learn Acer periodic table

Krypton

Noble gas, atomic number 36.

Krypton (from Greek:κρυπτός kryptos "the hidden one") is a chemical element with symbol Kr and atomic number 36. It is a member of group 18 (noble gases) elements. A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in the atmosphere, is isolated by fractionally distilling liquefied air, and is often used with other rare gases in fluorescent lamps.

Facts

Symbol Kr. Atomic mass 83.7982 u. Group 18, period 4. Electron configuration [Ar] 3d10 4s2 4p6. Electrons per shell 2, 8, 18, 8. State at room temperature: Gas. Melting point -157.4 °C, boiling point -153.2 °C. Discovered by William Ramsay.

Element data from Wikipedia, CC BY-SA 3.0.