Which element, found in group 18 of the periodic table, is commonly used in light bulbs?
Category: Knowledge · Difficulty: hard
Hint: It's colorless, odorless, and inert under most conditions.
Answer
Argon
Explanation
Noble gases, particularly argon, are used in light bulbs to prevent filament oxidation.
This is a hard knowledge riddle — a tricky one that takes a little thought. The answer is Argon.
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