Neon
Neon is a chemical element with 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.
Atomic Weight: 20.1797 Density: 0.9 g/l Melting Point: -248.59 °C Boiling Point: -246.08 °C