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三键

三鍵(英語:Triple bond),或寫作叁键,是化學中兩原子間以3對價電子連結的共價鍵,可以「≡」表示。

元素和化合物

[编辑]

雙原子氮類、一氧化碳氰氣氰化物都有三鍵。

可以三鍵相連的原子(原子對、名稱、化學式、結構式)
碳≡碳:乙炔
碳≡氮:
氮≡氮:雙原子氮
碳≡氧:一氧化碳
碳≡磷:磷雜乙炔
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三键
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