Nitrogen Dioxide Molecule
Nitrogen dioxide is a chemical compound. It is an intermediate in the industrial synthesis of nitric acid. It has been used as a catalyst in certain oxidation reactions, as an inhibitor to prevent polymerization of acrylates during distillation, as a nitrating agent for organic compounds, as an oxidizing agent, as a rocket fuel, as a flour bleaching agent and in increasing the wet strength of paper.
At first sight, NO 2 seems similar to CO 2 , carbon dioxide. But an NO 2 molecule contains one more electron than CO 2 . If an electron is removed from NO 2 , you get the NO 2 + (nitronium or nitryl) ion. It is isoelectronic with CO 2 , having two N=O double bonds and no unpaired electrons, so repulsion between the two regions of electron density is minimised by the 180° bond angle, and it is linear, as with CO 2 .