Neon. It's actually a sort of orangey-red and not a pure red. Pure red bulbs are probably fluorescent bulbs containing Mercury vapor with tinted glass to make the light appear red.
Mainly Neon
Nitrogen.
Beryillium
Tugsten No, its Neon. like Neon signs actually its not neon because neon is used for neon lights the questions states what is used in light bulb filaments not neon lights.
Silicon ... or more correctly silicon oxide.
Beryllium
Neon.
Xenon and argon are the elements used in fluorescent lights.
The first element in the fourth period, which is used in making fertilizer, is potassium.
Neon is used in Neon lights.
Chromium and Nickel
Nitrogen is.
The element that is used in the making of supersonic airplane wings is titanium. Titanium is a chemical element with the symbol Ti and the atomic number 22.
They are essentially coloured white chocolate. Commonly used in candy making and baking.
Nitrogen.
Hydrogen
Beryillium
polyacrylonitrile