Question 1
What is the relationship between the following compounds?

◦ isotopes
◦ constitutional isomers
◦ empirical isomers
◦ resonance isomers
◦ There is no relationship
Question 2
Which of the following compounds are constitutional isomers?

◦ I and III
◦ I, II and IV
◦ I and II
◦ II, III and IV
◦ I, II, and III