Answer
Lewis structures are shown in the picture.
Work Step by Step
1) Arrange the atoms next to each other.
2) Count the total number of valence electrons for each molecule (H has 1, C has 4, N has 5, and O has 6).
3) Connect the atoms by adding a single bond each and then add lone pairs.
4) Use lone pairs to create multiple bonds while making sure each atom has a zero formal charge. (Tip: C must have four bonds, N must have three bonds, O must have two bonds).
