10
Ne
18
週期
2
p
個質子
電子
個中子
10
10
10
一般屬性
原子序數
10
標準原子質量
20.1797
品質編號
20
類別
惰性氣體
顏色
無色
放射性
From the Greek word neos, new
晶體結構
面居中立方
歷史
Neon was discovered in 1898 by the British chemists Sir William Ramsay and Morris W. Travers in London.

It was discovered when Ramsay chilled a sample of air until it became a liquid, then warmed the liquid and captured the gases as they boiled off.

After 1902, Georges Claude's company, Air Liquide, was producing industrial quantities of neon as a byproduct of his air liquefaction business.
每個外殼的電子
2, 8
電子排布
[He] 2s2 2p6
Ne
In a vacuum discharge tube, neon glows reddish orange
物理性質
物態
氣體
密度
0.0008999 g/cm3
熔點
24.56 K | -248.59 °C | -415.46 °F
沸點
27.07 K | -246.08 °C | -410.94 °F
熔化熱
0.34 kJ/mol
汽化熱
1.75 kJ/mol
比熱容
1.03 J/g·K
地殼豐度
3×10-7%
宇宙豐度
0.13%
Vial
圖片來源: Images-of-elements
Vial of glowing ultrapure neon
CAS 編號
7440-01-9
Pubchem CID 編號
23935
原子性質
原子半徑
38 pm
共價半徑
58 pm
電負性
-
電離電位
21.5645 eV
原子體積
16.7 cm3/mol
熱導率
0.000493 W/cm·K
氧化態
0
應用
Neon is often used in brightly lit advertising signs.

It is also used in vacuum tubes, high-voltage indicators, lightning arrestors, wave meter tubes, television tubes, and helium-neon lasers.

Liquid neon is used as a cryogenic refrigerant.
Neon is not known to be toxic
同位素
穩定同位素
20Ne, 21Ne, 22Ne
不穩定同位素
16Ne, 17Ne, 18Ne, 19Ne, 23Ne, 24Ne, 25Ne, 26Ne, 27Ne, 28Ne, 29Ne, 30Ne, 31Ne, 32Ne, 33Ne, 34Ne