Krypton
Kr
The atomic number of Krypton is 36, the mass number is 83.80. It's in period 4 and its group number is 18 and the group name is noble gases. It's a gas. It's a non-metal.
Most glowing things
Krypton makes stuff glow
Electrical lamp thing.
It's in the lights
Superman
Yes I know he's a fictional character but it's in the movie.