Nítrójìn: Ìyàtọ̀ láàrin àwọn àtúnyẹ̀wò

 

Nitrogen compounds were well known by the Middle Ages. [[Alchemy|Alchemists]] knew nitric acid as ''aqua fortis'' (strong water). The mixture of nitric and [[hydrochloric acid]]s was known as ''[[aqua regia]]'' (royal water), celebrated for its ability to dissolve [[gold]] (the ''king'' of metals). The earliest military, industrial, and agricultural applications of nitrogen compounds used saltpetre ([[sodium nitrate]] or potassium nitrate), most notably in [[gunpowder]], and later as [[fertilizer]]. In 1910, [[John William Strutt, 3rd Baron Rayleigh|Lord Rayleigh]] discovered that an electrical discharge in nitrogen gas produced "active nitrogen", an [[allotrope]] considered to be [[monatomic]]. The "whirling cloud of brilliant yellow light" produced by his apparatus reacted with [[mercury (element)|quicksilver]] to produce explosive [[mercury nitride]].<ref>[http://www.lateralscience.co.uk/activen/index.html Lord Rayleigh's Active Nitrogen]. Lateralscience.co.uk. Retrieved on 2011-10-26.</ref>

 

{{ẹ̀kúnrẹ́rẹ́}}

== Itokasi ==

{{reflist}}