Now, to find out which atom will act as a central one, we have to look at Pauling’s Electronegativity chart. ![]() Total valence electron number in NO2 = 5 + 6*2 Oxygen belongs to group 16 ( or group 6) and has an atomic number of 8, therefore a valency of 6. Nitrogen belongs to group 15( or group 5) and has an atomic number of 7, therefore has a valency of 5. Let us talk about drawing the Lewis Structure for Nitrogen Dioxide ( NO2 ).Ī molecule of nitrogen dioxide consists of one nitrogen atom and two atoms of oxygen. This is a limited theory on chemical bonding nature and electronic structure but provides a simple viewpoint towards the formation of any molecular composition. Lewis Structure is a diagrammatic representation of any given molecule with the help of the constituent atoms and the position and arrangement of electrons to form bonds and lone pairs. The electrons in the outermost shell which determine the valency are known as valence electrons. Inside an atom, we have the positively charged nucleus surrounded by electrons in their shells forming a negatively charged cloud. NO2 acts as an intermediate in HNO3 acid manufacturing as well as an oxidizer for fuels in rockets and space probes.īelow are the laboratory preparation methods of Nitrogen Dioxide. It has applications in tobacco and explosive industries. This chemical can be used for bleaching and sterilization purposes. ![]() It can be cooled and compressed into a yellowish-brown liquid for tendshipping and transport.Ī highly toxic poisonous chemical compound, NO2 is a major air pollutant and belongs to the group of oxides of nitrogen. It is one of the most common gaseous molecules having a reddish-brown hue.
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