Q. The Cahn-Ingold-Prelog priorities of the group and the absolute configuration (R/S) of the following compound are
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 1781  218 Organic Chemistry – Some Basic Principles and Techniques Report Error

Solution:

The priority number of a ligand is based on the atomic no. of the element in the ligand that bonds the ligand to chiral center. The higher the atomic number, the higher the proirity