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JIPMERJIPMER 2007Organic Chemistry – Some Basic Principles and Techniques
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Solution:
Lowest priority atom is always away from the viewer. Priority is seen on the basis of atomic number and if atomic numbers are same then on the basis of second or third bond in above figure priority order group or atom is −Br>−Cl>−CH3>H and in it rotation is clockwise. So it shows R-configuration.
