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Which noble gas is used in fluorescent lighting?

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Argon gas is a colorless and odorless noble gas that is widely used in fluorescent lighting. When an electric current is passed through a gas-filled tube containing argon gas, it causes the gas to emit a pale blue light. The addition of mercury vapor to the argon gas produces a brighter light, and this is how fluorescent lights are created. The emitted light is different from the normal incandescent light, which comes from a hot filament, as it is created by the excitation of gas molecules. Due to its relatively low cost and high efficiency, argon gas is the most commonly used gas in fluorescent lighting. It is also used in other types of gas discharge lamps, such as neon signs and plasma displays.

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Pankaj Sanodiya

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