Question

draw the lewis structure created by the curved arrow. write in formal charges wherever they are not equal to zero.

Explanation:

Step1: Follow the curved - arrow movement

The curved arrow indicates that the lone - pair on the negatively charged nitrogen is being donated to the positively charged carbon.

Step2: Redraw the Lewis structure

The new structure will have a double - bond between the carbon and the nitrogen that was previously negatively charged. The formal charges will be recalculated. The formula for formal charge is $FC = V - N_b - \frac{B}{2}$, where $V$ is the number of valence electrons, $N_b$ is the number of non - bonding electrons, and $B$ is the number of bonding electrons.
For the original positively charged carbon: $V = 4$, $N_b=0$, $B = 8$, so $FC=4 - 0-\frac{8}{2}=0$.
For the original negatively charged nitrogen: $V = 5$, $N_b = 2$, $B = 6$, so $FC = 5 - 2-\frac{6}{2}=0$.

Step3: Draw the new Lewis structure

The new Lewis structure has a double - bond between carbon and nitrogen. Carbon is bonded to two hydrogens and a nitrogen with a single bond, and the other nitrogen is bonded to two hydrogens and has a double - bond with carbon. There are no non - zero formal charges.

Answer:

H
|
H - C = N - H
|
H