氟,化學元素也,符號為F,原子序九,屬鹵素。色淡黃,敏於腐蝕,有毒。
性烈,難以自存。常合二為一,成雙原子分子,稱氟氣。電負度甲於各元素,鮑林標度下,幾近於四(四為最高)。常溫之下,已可化合於他物,並生熱。
以性烈故,氟與氟化物,俱可合於貴氣體(初以為貴氣體絕無反應,後以相合於氟故,方知誤)。一九六二年,得六氟合鉑酸氙。嗣後,又得二氟化氙、六氟化氙、三氧化氙、氪氟化物等等。
同位素凡十八,性穩者獨氟十九。
聲音動静,具錄於維基共享︰氟 |
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