Does #NO_3# obey the octet rule?

1 Answer
Aug 20, 2016

Answer:

Certainly #NO_3^-#, #"nitrate anion"#, does.

Explanation:

For nitrate ion there are #1+5+3xx6=24" valence electrons"# to distribute. The Lewis structures show charge separation, and localized charges on nitrogen on oxygen.

#O=N^(+)(-O)_2^-#

Around the nitrogen and each oxygen atom there are 8 electrons. The formal charge is as given. Of course, the oxygen atoms in the structure are equivalent by resonance.