What is "krypton difluoride"

n. (context inorganic compound English) A binary compound of krypton and fluorine

Krypton difluoride, KrF is a chemical compound of krypton and fluorine. It was the first compound of krypton discovered. It is a volatile, colourless solid. The structure of the KrF molecule is linear, with Kr−F distances of 188.9 pm. It reacts with strong Lewis acids to form salts of the KrF and Kr cations.