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What type of light bulb is usually filled with a mixture of inert gases (ar and kr) and mercury?

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Answer: fluorescent

Step-by-step explanation:

The type of light bulb that is typically filled with a mixture of inert gases such as argon (Ar) and krypton (Kr), along with mercury, is called a fluorescent light bulb. Fluorescent bulbs rely on the excitation of mercury vapor to produce ultraviolet (UV) light, which then interacts with a phosphor coating on the inside of the bulb to create visible light. The inert gases help facilitate the electrical discharge and provide stability to the overall system.

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