MHT CET2017ChemistryGeneral Organic Chemistry
In assigning R-S configuration which among the following groups has highest priority?
Options
- A- S O 3 H
- B– C O O H
- C– C H O
- D- C 6 H 5
Correct answer
A. - S O 3 H
Step-by-step solution
In assigning ( R - S ) configuration (- SO ₃ H ) group has highest priority. The decreasing order of priority is (- SO ₃ H >- COOH >- CHO >- C ₆ H ₅ ). Higher is the atomic number of the atom, higher is its priority. The atomic number of ( S ) is maximum. Hence, (- SO ₃ H ) group has highest priority.