Неон
10
Ne
Група
18
Период
2
Блок
p
Протони
Електрони
Неутрони
10
10
10
Главни свойства
Атомен номер
10
Атомна маса
20.1797
Масов номер
20
Категория
Благородни газове
Цвят
Безцветен
Радиоактивни
Не
From the Greek word neos, new
Кристална структура
Кубична стенноцентрирана решетка
История
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.
Електрон на обвивка
2, 8
Електронна конфигурация
[He] 2s2 2p6
In a vacuum discharge tube, neon glows reddish orange
Физични свойства
Фаза
Газ
Плътност
0.0008999 g/cm3
Температура на топене
24.56 K | -248.59 °C | -415.46 °F
Температура на кипене
27.07 K | -246.08 °C | -410.94 °F
Топлина на сливането
0.34 kJ/mol
Топлина на изпаряване
1.75 kJ/mol
Специфичен топлинен капацитет
1.03 J/g·K
Изобилие в земната кора
3×10-7%
Изобилие в вселената
0.13%
Номер на CAS
7440-01-9
Номер на PubChem CID
23935
Атомни свойства
Атомен радиус
38 pm
Ковалентен радиус
58 pm
Електроотрицателност
-
Йонизационен потенциал
21.5645 eV
Моларен обем
16.7 cm3/mol
Топлопроводимост
0.000493 W/cm·K
Оксидационни държави
0
Приложения
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
Изотопи
Стабилни изотопи
20Ne, 21Ne, 22NeНестабилни изотопи
16Ne, 17Ne, 18Ne, 19Ne, 23Ne, 24Ne, 25Ne, 26Ne, 27Ne, 28Ne, 29Ne, 30Ne, 31Ne, 32Ne, 33Ne, 34Ne