氮者,化學元素也,符號為N,原子序七,屬非金屬,無色,常存為雙原子分子。甲於大氣,凡百有七十八。
因性頗惰故,清徐壽譯曰「淡氣」。後統一部首,凡氣體入气部,遂改今名。
以價廉,性惰故,作護衛之氣,用諸煉金、高溫合成。效雖不及氦氬,所費低廉。施以高熱,可製氮化物如氮化硅陶瓷、氮化硼等等。又,可製氮肥。其液態可冷凍他物。
同位素凡十七,自氮十迄氮廿五。性穩者惟氮十四、氮十五耳。
聲音動静,具錄於維基共享︰氮 |
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