ネオン
10
Ne
族
18
周期
2
ブロック
p
陽子
電子
中性子
10
10
10
一般特性
原子番号
10
原子量
20.1797
質量数
20
カテゴリ
希ガス
色
無色
放射性
いいえ
名前の由来は、ギリシャ語の neos (新しい) からきた言葉です。
結晶構造
面心立方格子
歴史
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.
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.
電子殻
2, 8
電子配置
[He] 2s2 2p6
In a vacuum discharge tube, neon glows reddish orange
物理特性
相
気体
密度
0.0008999 g/㎝3
融点
24.56 K | -248.59 °C | -415.46 °F
沸点
27.07 K | -246.08 °C | -410.94 °F
融解熱
0.34 kJ/mol
蒸発熱
1.75 kJ/mol
熱容量
1.03 J/g·K
地殻中における存在比
3×10-7%
宇宙空間における存在比
0.13%
CAS登録番号
7440-01-9
PubChem CID番号
23935
原子特性
原子半径
38 pm
共有結合半径
58 pm
電気陰性度
-
イオン化エネルギー
21.5645 eV
モル体積
16.7 ㎝3/mol
熱伝導率
0.000493 W/㎝·K
酸化数
0
用途
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.
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
同位体
安定同位体
20Ne, 21Ne, 22Ne不安定同位体
16Ne, 17Ne, 18Ne, 19Ne, 23Ne, 24Ne, 25Ne, 26Ne, 27Ne, 28Ne, 29Ne, 30Ne, 31Ne, 32Ne, 33Ne, 34Ne