Question

4. Which of the following could be antiaromatic (assuming sp hybridization)? A. III B. II C. IV D. E. None 5. Which one of the following is nonaromatic? IV A IV C. D. II E None 6. Which is the correct bond order for the C-C bonds in benzene? III IV A. II B. 1 CN D. E None

Answer 1

4. :O: This is compound. anti arometic si H Assuming sp2 hybridization of 'o' and so atom atoms and one present lone in pair pure up each of the orbital. of one oh electrons pair sulfur in each oxygen and donated in the ring. Thus total X-electrons in would be 8n electrons. the ring una electron where n=2 ats Thus this is anti-arometie compound,

5. non-arometic This compound is not stable in cyclic or as it as 4an electrons where n=2, anti arometic in planer configuration so it change its planer configuration in to boad or tab like configurations where anti-arometicity removed and get stability. Thus it is non-arometic as not a planer configuration. c-c bond order of each bond in benzene would be 1.5 In benzene 6h electrons are totally in the ring. so bond order of a would equal. so bond order of each delocalized cre bond