霓虹
...两辆车都趴在内里时还是感觉有些拥堵邓汶侧着身子走到两辆车的中间,拉开右面的轿车车门把行李放到后座上,轿车的品牌是霓虹(Neon),克莱斯勒公司的,左面的是辆大切诺基牌子的吉普,也是克莱斯勒公司的邓汶扒车库的卷帘门打开,刚要坐进霓虹的驾驶座,一眼瞥见大切诺...
[化学] 氖
回复: 从锂-氩中,化学性质最不活跃的是氖(Ne)。 氖(neon)(旧译作氝,讹作氞),是一种化学元素,它的化学符号是Ne,它的原子序数是10,是一种无色的稀有气体,把它放电时呈橙红色。
[化学] 氖气
氖气标识中文名称:氖气英文名称:neon氖气分子式:NeCAS登记号:7440-01-9氖气纯度:99.99~99.9999%氖气理化性质外观与性状:无色无臭气体。分子量:20.18熔点(℃):-24
彩虹
详细品牌简介:克莱斯勒的 彩虹 ( Neon )是一款紧凑式的小型轿车,行驶结构方面,旧款 彩虹 行驶时噪声、振动都较大, 彩虹 2000针对性做了悬挂系统结构性的改进,适度增...
霓虹灯鱼 ; 日光灯 ; 红绿灯 ; 宝莲灯鱼
电 霓虹灯 ; 电 氖灯 ; 氖气灯 ; 氖管
电 氖灯 ; 你还有我 ; 夜之霓虹
Neon is a chemical element with symbol Ne and atomic number 10. It is in group 18 (noble gases) of the periodic table. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air. It was discovered (along with krypton and xenon) in 1898 as one of the three residual rare inert elements remaining in dry air, after nitrogen, oxygen, argon and carbon dioxide are removed. Neon was the second of these three rare gases to be discovered, and was immediately recognized as a new element from its bright red emission spectrum. The name neon is derived from the Greek word, νέον, neuter singular form of νέος [neos], meaning new. Neon is chemically inert and forms no uncharged chemical compounds.During cosmic nucleogenesis of the elements, large amounts of neon are built up from the alpha-capture fusion process in stars. Although neon is a very common element in the universe and solar system (it is fifth in cosmic abundance after hydrogen, helium, oxygen and carbon), it is very rare on Earth. It composes about 18.2 ppm of air by volume (this is about the same as the molecular or mole fraction), and a smaller fraction in Earth's crust. The reason for neon's relative scarcity on Earth and the inner (terrestrial) planets, is that neon forms no compounds to fix it to solids, and is highly volatile, therefore escaping from the planetesimals under the warmth of the newly ignited Sun in the early Solar System. Even the atmosphere of Jupiter is somewhat depleted of neon, presumably for this reason.Neon gives a distinct reddish-orange glow when used in either low-voltage neon glow lamps or in high-voltage discharge tubes or neon advertising signs. The red emission line from neon is also responsible for the well known red light of helium–neon lasers. Neon is used in a few plasma tube and refrigerant applications but has few other commercial uses. It is commercially extracted by the fractional distillation of liquid air. It is considerably more expensive than helium, since air is its only source.