Question

write in any formal charges not equal to zero. if there are none, please check the box below.
there are no missing formal charges.

Explanation:

Step1: Recall formal - charge formula

The formal - charge formula is $FC = V - N - \frac{B}{2}$, where $V$ is the number of valence electrons of the neutral atom, $N$ is the number of non - bonding electrons, and $B$ is the number of bonding electrons.

Step2: Calculate formal charge of N

For N: $V = 5$ (N has 5 valence electrons), $N = 2$ (2 non - bonding electrons), $B = 6$ (3 bonds, 6 bonding electrons). So, $FC_N=5 - 2-\frac{6}{2}=0$.

Step3: Calculate formal charge of C

For C: $V = 4$ (C has 4 valence electrons), $N = 0$ (no non - bonding electrons), $B = 8$ (4 bonds, 8 bonding electrons). So, $FC_C=4 - 0-\frac{8}{2}=0$.

Step4: Calculate formal charge of O

For O: $V = 6$ (O has 6 valence electrons), $N = 4$ (4 non - bonding electrons), $B = 4$ (2 bonds, 4 bonding electrons). So, $FC_O=6 - 4-\frac{4}{2}=0$.

Answer:

There are no missing formal charges.