What is the name of \({{\text{(C}}{{\text{H}}_{\text{3}}}{\text{)}}_{\text{3}}}{\text{CCOC}}{{\text{H}}_{\text{3}}}\), applying IUPAC rules?

A.     2,2-dimethylbutan-3-one

B.     3,3-dimethylbutan-2-one

C.     2,2-dimethylbutanal

D.     3,3-dimethylbutanal

B

One respondent commented that “very few IB specific textbooks highlight the role of priority of naming functional groups”. It was the seventh hardest question; nearly 65% gave the correct answer with close to 28% opting for A (as expected).