# What is the electron configuration of nitrogen dioxide?

Dec 24, 2016

There are 17 valence electrons to distribute around 3 centres........

#### Explanation:

And the 17 valence electrons come from the $5 + 2 \times 6$ oxygen, and nitrogen valence electrons.

So a reasonable Lewis structure is $\left(O =\right) {N}^{+} - {O}^{-}$ with a LONE nitrogen-centred valence electron. These electrons can couple to form a $N - N$ bond in a dimer.

2(O=)N^(+)-O^(-)rightleftharpoons(""^(-)O)(O=)N^(+)-NO_2

There is necessarily formal charge separation in both the monomer and the dimer.