Question

Which of these structures has a resonance structure?

CH2CL2
H3O+
N2
C2H2
SCN-
HF
SO2
NO3-
NH3
C2H4
SO4^2-
HNO3

Thanks!

Answer 1

Which do you think?

Answer 2

@abb0t As of right now H30+, N2, C2H2 are no. I wanna say Ch2Cl2, C2H4, SO4^2-, HNO3 would be. I have no idea honestly though.

Answer 3

You're on the right track with what you have so far since you gave 3 correct answers. Just a note, dichloromethane (\(\sf C_2H_2Cl_2\)) does NOT have resonance. BUT, acetylene (\(\sf C_2H_2\)) does. So switch those two around.

Now you have 4. Can you think of 3 more? It might help to draw the structures using lewis dot, if that helps.

Do you understand what "resonance" means? It is the movement of electrons, or distribution of charge, in essence.

Answer 4

I have the Lewis Structures drawn for all of those but how do you tell or know how to switch them up and draw the resonance?