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(B) stereogenic centre (or chiral centre) is a carbon atom bonded to four different groups.$I$: $3$-bromo-$1,2$-dimethylcyclopentane. The carbons at p

Vedclass · Accepted Answer

All have a stereogenic centre.

Vedclass · Answer

(B) stereogenic centre (or chiral centre) is a carbon atom bonded to four different groups.$I$: $3$-bromo-$1,2$-dimethylcyclopentane. The carbons at positions $1, 2,$ and $3$ are chiral centres.$II$: $3$-methylpentan-$2$-one. The carbon at position $3$ is bonded to $-H, -CH_3, -CH_2CH_3,$ and $-COCH_3$. It is a stereogenic centre.$III$: $1$-chloro-$1$-fluoroethane. The central carbon is bonded to $-H, -F, -Cl,$ and $-CH_3$. It is a stereogenic centre.$IV$: $2$-methylcyclohexanone. The carbon at position $2$ is bonded to $-H, -CH_3, -CH_2-CH_2-CH_2-CH_2-C=O$ (the ring path one way) and $-C=O$ (the ring path the other way). Since the two paths around the ring are different,it is a stereogenic centre.Thus,all four compounds possess at least one stereogenic centre.

Select the correct option for the following compounds.

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