Neon is a chemical element with the symbol Ne and atomic number 10. It is a noble gas. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air.
It is a colorless, tasteless odorless inert gas
It changes to reddish-orange color in vacuum tube
It is chemically inactive
It has the lowest liquid range of any element.
It is used for manufacturing high-voltage indicators, television tubes, wave meter tubes and lightning arrestors
The reddish-orange color emitted from the neon lights are used for advertising purposes
It is commercially used as cryogenic refrigerant
It is combined with helium to produce helium-neon lasers.