氖,舊譯氝(或訛作氞),化學元素也,符號為Ne,原子序十,屬貴氣體。無色,通電呈橙紅,可充霓紅燈。其最外電子層,電子有八,合「八隅體」之則,故性惰。
除充霓虹燈外,亦用諸真空管、高壓指示器、避雷針、電視機螢光屏、氦氖鐳射等 。其液者可作冷凍用。
同位素十有一,自氖十七至氖廿七。性穩者氖二十(約佔九成)、氖廿一(佔萬分之二十七)、氖廿二(約佔百分之九)。而氖廿一、氖廿二者,得諸核裂變。
聲音動静,具錄於維基共享︰氖 |
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