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 it.Know More
The name "neon" is derived from the Greek word "neos," which means "new." Discovered by Sir William Ramsey and Morris Travers in 1898, neon has an atomic weight of 20.1797. The fourth most abundant element in the universe, neon is relatively rare on earth, making up 1 part per 65,000 in air. Widely used to make advertising signs, neon can be combined with helium to make gas lasers. It is used to make lightning arrestors and high-voltage indicators as well as television tubes and wave meter tubes. In its liquid state, neon is used as a refrigerant.
Activated charcoal is used to isolate neon. After super-cooling air, the charcoal absorbs the remaining neon and hydrogen. The hydrogen is then removed by adding oxygen, which converts it to water.
Inhalation of concentrated neon can cause dizziness, nausea, vomiting, loss of consciousness and death, and contact with liquid neon can result in frostbite to both skin and eyes. Because of neon's inability to form stable compounds, it poses no threat to the environment.Learn more about Atoms & Molecules
Formaldehyde, which is a colorless gas, can smell like pickles. However, the odor can be very strong and suffocating if a person is exposed to this chemical. Some possible symptoms of formaldehyde exposure are ocular and nasal irritation, headaches, respiratory problems and nausea, according to the Minnesota Department of Health.Full Answer >
Hydrogen is a colorless gas with an atomic number of 1 and an atomic weight of 1.008. Hydrogen has a melting point of minus 259.2 degrees Celsius and a boiling point of minus 252.762 degrees Celsius.Full Answer >
Neon is the least reactive element on the periodic table. As a noble gas, neon is colorless and odorless with extremely low reactivity in its natural state. Neon has an atomic number of 10.Full Answer >
Neon was discovered by freezing the chemical element argon using liquefied air. The gas that vaporized from the mixture was subjected to a high voltage to obtain its spectral lines. The crimson light that the gas emitted had never been recorded before, hence, the new element was given the name neon from the Greek neos, which means new.Full Answer >