Question

Write the structures of the following organic halogen compound.

A $2$-Chloro-$3$- methylpentane

B $p$-Bromochlorobenzene

C $1$-Chloro-$4$-ethylcyclohexane

D $2$-($2$-Chlorophenyl)-$1$-iodooctane

E $2$-Bromobutane

F $4$-tert-Butyl-$3$-iodoheptane

G $1$-Bromo-$4$-sec-butyl-$2$-methylbenzene

H $1$,$4$-Dibromobut-$2$-ene

Answer 1

Name: $2$−Chloro−$3$−methylpentane
Word root: pent (there are $5$ carbons in main chain)
Suffix: ane (there are only single bonds)

The substituents are as follows:
$C2$: chloro
$C3$: methyl

Hence, the structure of the compound
($2$−Chloro−$3$−methylpentane) can be shown as -



Name: $p$-Bromochlorobenzene
There is benzene ring as the main chain.

The substituents are as follows:
$C1$: bromo
$C4$: chloro

Hence, the structure of the compound ($p$-Bromochlorobenzene) can be shown as -



Name: $1$-Chloro-$4$-ethylcyclohexane
Word root: hex(there are $6$ carbons in
main chain, prefix ‘cyclo’ shows that it
is a cyclic structure).
Suffix: ane(there are only single bonds)

The substituents are as follows:
$C1$: chloro
$C4$: ethyl

Hence, the structure of the compound
($1$-Chloro-$4$-ethylcyclohexane) can be shown as -



Name: $2$-($2$-Chlorophenyl)-$1$-iodooctane
Word root: oct(there are $8$ carbons in
main chain)
Suffix: ane(there are only single bonds)

The substituents are as follows:
$C1$: iodo
$C2$: ($2$-Chlorophenyl)

Hence, the structure of the compound
($2$-($2$-Chlorophenyl)-$1$-iodooctane)
can be shown as -



Name: $2$-Bromobutane
Word root: but(there are $4$ carbons in
main chain)
Suffix: ane(there are only single bonds)

The substituent is as follows:
$C2$: bromo

Hence, the structure of the compound
($2$-Bromobutane) can be shown as-



Name: $4$-tert-Butyl-$3$-iodoheptane
Word root: hept (there are $7$ carbons in
main chain)
Suffix: ane (there are only single bonds)

The substituents are as follows:
$C3$: iodo
$C4$: tert-butyl

Hence, the structure of the compound
($4$-tert-Butyl-$3$-iodoheptane) can be shown
as-



Name: $1$-Bromo-$4$-sec-butyl-$2$-methylbenzene
Benzene ring is the main chain.

The substituents on the ring are as follows:
$C1$: bromo
$C2$: methyl
$C4$: sec-butyl

Hence, the structure of the compound
($1$-Bromo-$4$-sec-butyl-$2$-methylbenzene) can
be shown as -



Name: $1$,$4$-Dibromobut-$2$-ene
Word root: but (there are $4$ carbons
in main chain)
Suffix: ene (there is a double bond)

The substituents are as follows:
$C1$: bromo
$C4$: bromo

Hence, the structure of the compound ($1$,$4$-Dibromobut-$2$-ene) can be shown as -