neon
Sign in to saveNeon is a chemical element; it has the symbol Ne and the atomic number 10. It is the second noble gas in the periodic table. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with approximately two-thirds the density of air.
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Neon is a colorless, odorless gas that belongs to a special group of elements called noble gases and is identified by the chemical symbol Ne on the periodic table. It's used in applications like neon signs and lighting because of its unique properties, though it's chemically inert, meaning it rarely reacts with other elements.
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Article
12 sectionsContents
- History
- Isotopes
- Characteristics
- Occurrence
- Chemistry
- Production
- 2022 shortage
- Applications
- Lighting and signage
- Other
- References
- External links
Neon is a chemical element; it has the symbol Ne and the atomic number 10. It is the second noble gas in the periodic table. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with approximately two-thirds the density of air.
Neon was discovered in 1898 alongside krypton and xenon, identified as one of the three remaining rare inert elements in dry air after the removal of nitrogen, oxygen, argon, and carbon dioxide. Its discovery was marked by the distinctive bright red emission spectrum it exhibited, leading to its immediate recognition as a new element. The name neon originates from the Greek word , a neuter singular form of (), meaning 'new'. Neon is a chemically inert gas; although neon compounds do exist, they are primarily ionic molecules or fragile molecules held together by van der Waals forces.