because somebody didn't answer
A halogen bulb is a traditional tungsten filament bulb filled with a noble gas that gives off a soft, yellowish light. In a metal halide bulb, the light emitted is bright white or even bluish. They have a longer life than halogen bulbs, but their brightness can diminish over time.
Chlorine is a halogen.
chlorine
No. Argon is a noble gas.
No halogen gas has a mass of under 15 atomic mass units. The closest is fluorine, at 19.0 atomic mass units.
There are two types of lamps the tungsten halogen lamps and incandescent lamps. Tungsten Halogen Lamps are similar to incandescent lamps and produce light in the same manner from a tungsten filament; however the bulb contains a halogen gas (bromine or iodine) which is active in controlling tungsten evaporation, whereas the incandescent lamp suppresses tungsten evaporation.
A halogen bulb is a traditional tungsten filament bulb filled with a noble gas that gives off a soft, yellowish light. In a metal halide bulb, the light emitted is bright white or even bluish. They have a longer life than halogen bulbs, but their brightness can diminish over time.
Halogen gas is in a Tungsten-Halogen Light Bulb.
Halogen.
Halogen is a gas, so your question doesn't make much sense. If you're asking about a halogen (light) bulb, then the answer is: mainly halogen.
One of the problems all incandescent lamps have is evaporation/sublimation of the filament. You might have a hard time imagining a metal like tungsten becoming vapor, but it does, its slow but the filament does turn to vapor. In ordinary lamps this hot tungsten vapor condenses out on the cool glass envelope, darkening it. The filament slowly gets thinner too and as it does some parts begin to thin faster, those parts get hotter causing the tungsten to evaporate faster making them thin even faster. Eventually some part of the filament gets too thin and the lamp burns out.In a halogen lamp part of the fill gas of the lamp is a halogen (e.g. chlorine, bromine). Metal vapor and the halogen gas react, creating a metal halide gas. High temperature breaks down this metal halide gas, depositing the metal and reforming the original halogen gas (the catalyst). As the highest temperature in the lamp is on the filament (with the hottest parts of the filament being the thinnest), the tungsten is deposited right back on the filament where it came from (with more of it being deposited on those parts that are thinnest, thus patching them back up). Thus since the filament in a halogen lamp thins much much more slowly (and is self patching when spots thin faster, instead of running away and thinning even faster) than that in an ordinary lamp it takes much longer before it burns out.
Argon is a noble gas. It is not a halogen. Fluorine is a example for that.
That'd be Halogen.
Chlorine is a halogen.
chlorine
No, it is a noble gas
Iodine is a non-metal. It belongs to group 17 (halogen family).