Krypton is the usual thought as it seems to relate to kryptonite which all Superman fans know glows green.
The noble gases fluoresce in different colours in gas discharge tubes. Helium is white to orange, neon is red-orange, argon violet to pale lavender-blue, krypton white to greenish, xenon whitish to blue green at high currents and radon is not specified. So the Superman fans are right!
Krypton
The question is actusally related to the mystery of "What color is an orange ?"
neon
The primary gas is neon. However, minor amounts of other inert gases are added to privide the different colors seen in neon signs.
Neon atoms are the atoms of the inert, colorless, and odorless gas neon. Neon freezes at -248.59°C, boils at -246.08°C, and has a specific gravity of 0.8999 at 0°C. Neon atoms have 10 electrons, 10 protons, and 10 neutrons. When excited by an electric current, neon glows red and is widely used in advertising signs. It is also used as a refrigerant in cryogenics.
to make neon signs
Neon gas is used in neon-signs, Vegas is full of them.
Neon signs are mostly used in bars or as advertisment.
Neon is a member of the noble gas family. Neon is used to make neon signs and television tubes. Liquid neon is used as a cryogenic refrigerant.
Krypton
it is used in neon discharge lamps and neon signs.
Neon
Neon and a combination of argon and mercury are the most commonly used gases in neon signs.
If you're referring to neon signs, the gas used is either neon, or argon (used with mercury). Fluorescent lights use the same principle as neon signs.
Neon is used to make neon signs. Neon and helium are used to make gas lasers. Neon is used in lightning arrestors, television tubes, high-voltage indicators, and wave meter tubes. Liquid neon is used as a cryogenic refrigerant, as it has over 40 times the refrigerating capacity per unit volume than liquid helium and over three times that of liquid hydrogen.
The answer to this is neon.
Neon