This element is not currently sponsored. To sponsor this element yourself, please contact Michelle Saxton, Dept. C Krypton was discovered by Ramsay and Travers in 1898 in the residue left after liquid air had boiled away. Krypton is one of the noble gases, and is characterized by brilliant green and orange spectral lines. There are thirteen stable isotopes, six of them occuring naturally.
Solid krypton is a white crystalline substance with a face-centered cubic structure.
Long thought to be inert, several compounds containing krypton have recently been found, including krypton diflouride.