Chemical sign of neon No. Main physical properties of neon: Physical state Gas Density (0 ° C, 101.325 kPa) 0.9002 g / l Triple point 24.5561 K, 43,200 Pa Melting point 24.56 K (-248.59 ° C, -415.46 ° F) Boiling point 27.07 K (-246.08 ° C, -410.94 ° F) Applications of neon: Neon is most commonly used in fluorescent lamps. It is used in electron tubes, lightning arresters and in the past in the picture tubes of televisions.