 | The Noble Gasesnoble gases
The elements of Group VIII of the Periodic Table are gases which have closed shells and are unreactive chemically. Helium, neon, argon and krypton are used in gas discharge decorative ligthing, called "neon" lights. Argon is used to fill incandescent light bulbs to inhibit the evaporation of the tungsten filaments and increase bulb life. Xenon is used in electronic flash tubes for cameras and other flash tubes. 元素周期表中第VIII组的元素是气体，它们具有闭合的电子壳层且化学性质不活泼。氦、氖、氩和氪用于气体放电装饰照明，称为“氖灯”。氩气用于填充白炽灯泡以抑制钨丝的蒸发并延长灯泡寿命。氙气用于相机和其他闪光灯管中的电子闪光灯。
The densities of the noble gases increase with increasing molecular mass. Helium is about one seventh the density of air and can be used in balloons and lighter-than-air craft. Xenon is about five times the density of air. noble gases 的密度随着分子质量的增加而增加。氦的密度大约是空气的七分之一，可用于气球和比空气轻的飞行器。氙的密度大约是空气的五倍。
Noble gases are used to advantage in environments where corrosion or damage from electrical discharges might occur if the environments were filled with air. One such use is in fluorescent light tubes. 惰性气体常用于那些如果环境中充满空气的话可能会发生腐蚀或因电弧放电而受损的环境。其中一种用途是用于荧光灯管。
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| Chemistry of the Elements
元素的化学 |
Periodic Table
Chemistry concepts
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