How many isomers have the molecular formula C | vedclass

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(C) The molecular formula $C_6H_{11}Br$ corresponds to a cyclopentane ring with a methyl group and a bromine atom attached. The possible structural is

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$6$

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(C) The molecular formula $C_6H_{11}Br$ corresponds to a cyclopentane ring with a methyl group and a bromine atom attached. The possible structural isomers are: $1$. $1$-bromo-$1$-methylcyclopentane (one isomer). $2$. $1$-bromo-$2$-methylcyclopentane (exists as $cis$ and $trans$ isomers,total $2$). $3$. $1$-bromo-$3$-methylcyclopentane (exists as $cis$ and $trans$ isomers,total $2$). $4$. (Bromomethyl)cyclopentane (one isomer). Summing these up: $1 + 2 + 2 + 1 = 6$ isomers.

How many isomers have the molecular formula $C_6H_{11}Br$ and are derivatives of cyclopentane? (ignoring chirality)

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