WHAT IS NITROGEN? HOW WE CAN PROVE IT WITH EXPERIMENT?
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INTODUCTION
☆ The chemical element of atomic number 7 , a colourless , odourless , unreactive gas that form 78 percent of earths atmosphere. Liquid nitrogen (distilling liquid air). It was discovered and isolate by Scottish physician Daniel Ruthorford 1772.
☆ Nitrogen is very impotant for plants . It is a component of all protein and can be found in living being system. It is used in organic materials like fertilizers , poison etc.
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