Can anyone explain how the bonding is formed in NO3 because I can't understand how N can satisfy electron hunger of 3 oxygen atom
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Resonance. Count the number of electrons on the oxygens and nitrogen in each of the resonance structures. – Apoorv Potnis Feb 07 '18 at 11:57
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1Please, clarify: are you talking about $\ce{NO3-}$ anion or $\ce{NO3}$ neutral radical . – permeakra Feb 07 '18 at 12:22
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@permeakra While I agree to clear up ambiguity here, for the electronic structure and the "electron hunger" it shouldn't matter that much. – Martin - マーチン Feb 07 '18 at 13:18
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Nitrogen has 5 valence atoms:
2 electrons are donated to an oxygen atom with 6 valence electrons.
2 electrons are shared with an oxygen atom to form a sigma and a pi bond.
1 electron is shared with a negatively charged oxygen atom forming a sigma bond.
Since the double bond can be anywhere, there are three possible Lewis structures. You can symbolize this by using one single drawing to show that the double bond is delocalized (that's called a resonance structure).
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