10
Neon
Atomic Number10
Atomic Mass20.180 u
CategoryNoble Gas
State at Room TempGas
Year Discovered1898
About Neon
The fifth most abundant element in the universe but rare on Earth. Neon signs produce a distinctive reddish-orange glow. Actually only produces red light, other colors come from different gases. Used in lasers, vacuum tubes, and high-voltage indicators. Liquid neon is an important cryogenic refrigerant. The name means new in Greek.
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