everyone has seen those bright electrically colored signs known as neon signs, but neon is not the only thing in those bright light up signs. these signs really contain neon, argon, krypton, helium, and xenon. all those colors you see are the cause of the excited electrons on the atomic emission spectrum and based on the elements they give off a certain color. such as helium has a pinkish tint, xenon is lavender, argon is blueish, and krypton is yellowish.
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