Newman projections P,Q,R,and S are shown belo | vedclass

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(C) To determine if the molecules are identical,we assign $IUPAC$ names to each Newman projection:$P$: The structure corresponds to $2,3,3$-trimethylp

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$Q$ and $R$

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(C) To determine if the molecules are identical,we assign $IUPAC$ names to each Newman projection:$P$: The structure corresponds to $2,3,3$-trimethylpentan-$2$-ol.$Q$: The structure corresponds to $3$-ethyl-$2$-methylpentan-$2$-ol.$R$: The structure corresponds to $3$-ethyl-$2$-methylpentan-$2$-ol.$S$: The structure corresponds to $3$-ethyl-$2$-methylpentan-$3$-ol.Comparing the $IUPAC$ names,$Q$ and $R$ have the same name ($3$-ethyl-$2$-methylpentan-$2$-ol),which means they represent the same molecule. Thus,the correct option is $C$.

Newman projections $P$,$Q$,$R$,and $S$ are shown below:
Which one of the following options represents identical molecules?

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Newman projections $P$,$Q$,$R$,and $S$ are shown below:Which one of the following options represents identical molecules?