What is the lewis structure for #NO_3^-#?

1 Answer
Apr 25, 2016

Answer:

24 valence electrons (#3xx6+5+1#); 3 atoms possess a formal charge.

Explanation:

#O=N^(+)(-O^-)_2# is the standard Lewis structure. Going from left to right, there are 6 electrons around #O# (hence neutral), 4 electrons around #N# (hence positive), and 7 electrons around the rightmost oxygens (hence each is a formal anion).

The formal charge can be summed to #-1# as required. Of course, the charges are conceived to be delocalized across the structure.