Neon has the chemical formula Ne and atomic number 10. At room temperature, neon exists in the gaseous phase, and it classifies as a noble gas because its outer electron shell contains a full octet of electrons. This pro... More » Science Chemistry Atoms & Molecules

Krypton is element number 36 on the periodic table and is classified as one of the noble gases. At normal temperatures, krypton and the other elements in Group 18 are extremely unreactive. The reason is that, with the ex... More »

Platinum is a transition metal that is also a precious metal. Pre-Colombian Indians from South America were aware of this element long before its discovery in the 18th century. Antonio de Ulloa is believed to be the scie... More » Science Chemistry Atoms & Molecules

Neon (Ne) is the most common noble gas used in neon signs. The term "neon signs" comes from its frequent use as a lighting agent. More »

Neon is a nontoxic, colorless gas that forms no known stable compounds. It is the second lightest noble gas. If placed in a vacuum discharge tube, neon has a reddish-orange glow when an electric current is passed through... More »

Neon lights use glass tubes filled with a low-pressure gas that glows under high voltage. A sign maker shapes one or more of the tubes as desired, adds a fluorescent coating and then fills them with special gases. This a... More »

Neon has no electronegativity on the Pauling scale because it is a noble gas and has a full set of electrons in its outer shell. As of June 2014, there are no known compounds that contain neon, although there is a possib... More »