Wednesday, April 4, 2012

Which choice represents a pair of resonance structures? Note that lone pairs have been omitted for clarity.


\rm C\!=\!O and \rm I\!-\!I
\rm O\!=\!N\!-\!Cl and \rm N\!=\!O\!-\!Cl
\rm O\!-\!S\!=\!O and \rm O\!=\!S\!-\!O
\rm N\!\equiv\!C\!-\!S\!-\!H and \rm N\!\equiv\!C\!-\!S^-
Correct

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