Answer
The lewis structure and the formal charges on the atoms are shown in the picture below.
Work Step by Step
The formal charge on left side lewis structure:
- N normally has three bonds, but here it has 4 bonds so the formal charge is +1.
- The other N has one more lone pair than normal so it has a -1 formal charge.
The formal charge on the right side lewis structure:
- The carbon has a lone pair so the formal charge is -1.
N has four bonds, so the formal charge is +1.