N2 is a diatomic molecule with two nitrogen atoms bonded by a triple bond. Each nitrogen atom contributes 5 valence electrons, totaling 10 electrons. The molecule is N≡N with one nitrogen atom having two lone pairs
N2 contains two nitrogen atoms with a triple bond. Each nitrogen atom has one lone pair
Discovered by D. Rutherford in 1772 at University of Edinburgh. Named from Greek 'nitron' and '-gen' meaning 'niter-forming'. Lavoisier named it in 1775-1776
MAP modifies package atmosphere to extend shelf life of food products. Oxygen promotes lipid oxidation and aerobic spoilage in food. Oxygen can be replaced with nitrogen or carbon dioxide
Nitrogen forms strong triple bonds due to its small atomic radius. N2 is unreactive except with lithium at room temperature. Nitrogen compounds exist for most elements except Group VIIIA. Nitrogen becomes more reactive at high temperatures
Dry air contains 21% oxygen and 78% nitrogen. Oxygen has molar mass of 32 g/mol, nitrogen 28 g/mol. Air's average molar mass is 28.9647 g/mol