a non- metal that is filled in glow signs .
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a non metal that is filled in glow signs is mercury
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Neon is the nonmetal which is used in glow signs.
The neon gas is a non reactive non metal.
The gas does not react chemically.
Therefore, it is used in glow signs.
The gas gives a red and orange color from far.
Signs with red lights have pure neon where as those with colors have some gases mixed.
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