Resonance structures of drawn ions and radicals

14 questions on Resonance structures of drawn ions and radicals from the General Organic Chemistry I: Electronic Effects chapter: 3 NEET level, 6 JEE Main, 5 JEE Advanced. Each one opens with its answer and solution.

• How many resonance structures (including the one drawn) can be written for the ion shown? Count only structures in which every atom other than the cationic carb... NEET level, drawn structure
• In the ion shown, over which atoms is the negative charge delocalised through resonance? NEET level, drawn structure
• The pi bonds of the compound shown are best described as forming NEET level, drawn structure
• Which of the structures shown is NOT a resonance contributor of the ion shown? (One of the options repeats the ion exactly as drawn.) JEE Main level, drawn structure
• Counting each carbon atom separately, how many different carbon atoms of the ion shown carry the positive charge in at least one resonance contributor? JEE Main level, drawn structure
• The ion shown is a hybrid of two resonance contributors, one of which is drawn. Which statement about the contributors is correct? JEE Main level, drawn structure
• How many resonance structures (including the one drawn) can be written for the ion shown, counting only structures with complete octets on all atoms except the ... JEE Main level, drawn structure
• For the ion shown, select all the atoms that carry negative charge in at least one resonance contributor. JEE Main level, drawn structure
• The pi system of the compound shown is best described as JEE Main level, drawn structure
• The compound shown is treated with one equivalent of a strong base, which removes its most acidic hydrogen. Counting only structures with complete octets on all... JEE Advanced level, drawn structure
• A strong base removes a proton from the sp3 carbon of the compound shown. How many resonance structures (all with complete octets, differing only in the positio... JEE Advanced level, drawn structure
• The alcohol shown ionises (loss of hydroxide) to give a carbocation. Counting each carbon atom separately, how many carbon atoms carry the positive charge in at... JEE Advanced level, drawn structure
• Select all correct statements about the ion shown. JEE Advanced level, drawn structure
• Select all correct statements about the ion shown. JEE Advanced level, drawn structure