Kr
Krypton
Information
The atomic number is 36. The Mass number is 83.80. It's in period 4 group 18. It's group name is called the Nobel Gases. It's state of matter in gas, and it's a non metal.
Camera bulb
Krypton, like the other noble gases, can be used in lighting and photography. Krypton light has a large number of spectral lines.
Fluorescent lights
an inert gas like krypton to surround your very active and hot flash filament. Fluorescent Lights
Lazer
krypton's high light output in plasmas allows it to play an important role in many high-powered gas lasers (krypton ion and excimer lasers), which pick out one of the many spectral lines to amplify.