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What are noble gases?
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Noble gases are a group of chemical elements with similar properties; they are odorless, colorless, monoatomic gases with very low chemical reactivity.
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Where on the periodic table are noble gases located?
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Noble gases are located in Group 18 on the far right of the periodic table.
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List all the noble gases.
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The noble gases are helium, neon, argon, krypton, xenon, and radon.
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Why are noble gases considered inert?
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Noble gases are considered inert because they have full valence electron shells, making them stable and unlikely to react with other elements.
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How is helium used in industry?
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Helium is used in cryogenics, as a protective gas in welding, and in gas chromatography.
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Which noble gas is used in neon signs and why?
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Neon is used in neon signs because it emits bright colored lights when electrically stimulated.
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What is the primary use of argon?
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Argon is primarily used as an inert shielding gas in welding and other high-temperature industrial processes.
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Why is radon considered hazardous?
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Radon is considered hazardous because it is radioactive and can accumulate in homes, increasing the risk of lung cancer.
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Describe one use of xenon.
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Xenon is used in high-intensity discharge lamps and flashlights.
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How does the rarity of noble gases affect their applications?
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Due to their rarity, noble gases are used for specific applications where their unique inert properties are essential, such as lighting and welding.
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Which noble gas has the lightest atomic weight?
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Helium has the lightest atomic weight of all the noble gases.
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What property of neon makes it suitable for advertising?
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Neon emits a bright red-orange light when used in gas discharge tubes, making it highly visible for advertising.
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Which noble gas is commonly used in double-pane windows for insulation?
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Argon is used in double-pane windows to provide insulation due to its poor thermal conductivity.
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What is the significance of krypton in the field of lighting?
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Krypton is used in certain types of photographic flashes and in high-performance lighting products.
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How do the chemical properties of noble gases influence their biological roles?
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Noble gases are inert and do not readily form compounds, so they do not play direct biological roles like other more reactive elements.
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