In assigning R-S configuration,which among th | vedclass

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(A) In assigning $R-S$ configuration,the priority is determined by the Cahn-Ingold-Prelog $(CIP)$ sequence rules.According to these rules,the atom wit

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$-SO_3H$

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(A) In assigning $R-S$ configuration,the priority is determined by the Cahn-Ingold-Prelog $(CIP)$ sequence rules.According to these rules,the atom with the higher atomic number attached directly to the chiral center is given higher priority.Comparing the atoms attached to the chiral center: $S$ (atomic number $16$) in $-SO_3H$ has a higher atomic number than $C$ (atomic number $6$) in $-COOH$,$-CHO$,and $-C_6H_5$.Therefore,the $-SO_3H$ group has the highest priority.The decreasing order of priority is $-SO_3H > -COOH > -CHO > -C_6H_5$.

In assigning $R-S$ configuration,which among the following groups has the highest priority?

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