Of Helium, Hydrogen, Mercury, and neon, which would produce a blue light, a peach light, a red light, and a purple??
Hydrogen- purple light Neon- red light Mercury- blue light Helium- peach light Gases emit light it does not matter if it is neon or not. Sodium emits an orange glow. This occurs when electrons bounce back to lower energy levels.
Neon; it's a gas that is USED in colored neon lamps,
