(So named (Greek neon, "new") in 1898 by Sir William Ramsay, it's co-discoverer) An inert chemical element, one of the noble gases, that is tasteless, odorless, and colorless, found in small quantities in the earth's atmosphere and used in discharge tubes, gas lasers, bright electrical signs, etc.

Symbol: Ne
Atomic number: 10
Atomic weight: 20.1797
Density (at 0°C with 101,325 pascals): 0.8999 g/L
Melting point: -248.67°C
Boiling point: -246.048°C
Valence: 0
Ground state electron configuration: [He]2s22p6