List SOF2, SO2F-, and S2O3^-2 in order of increasing sulfur-to-oxygen bond length.
How do u tell by just looking at the Lewis structures?
1 answer
Draw the Lewis electron dot structure. Single bonds are longer than double bonds are longer than triple bonds. Where resonance structures appear you will have something between single and double bonds; i.e., it will be shorter than a single bond but longer than a double bond.