Write all the possible structural formulae and give IUPAC names of the isomers of `C_(4)H_(9)Br, C_(5)H_(11)Br and C_(3)H_(7)Cl`.

Explanation

(a) Two isomers are possible for `C_(4)H_(9)Br`. Their structure and IUPAC names are given below:
(i) `underset("1-bromobutane")(CH_(3)CH_(2)CH_(2)CH_(2)Br)`
(ii) `underset("2 - bromobutane")(CH_(3)CH_(2)-undersetunderset(Br)(|)(CH)-CH_(3))`
(b) Eight isomers are possible for `C_(5)H_(11)Br`. Their structure and IUPAC names are given below:
(i) `underset("1-bromopentane")(CH_(3)CH_(2)CH_(2)CH_(2)CH_(2)Br)`
(ii) `underset("2-bromopentane")(CH_(3)CH_(2)CH_(2)-oversetoverset(OH)(|)(CH)-CH_(3))`
(iii) `underset("3-Bromo pentane")(CH_(3)CH_(2)oversetoverset(Br)(|)(CH)-CH_(2)CH_(3))`
(iv) `underset("1-bromo-2-methylbutane")(CH_(3)CH_(2)-oversetoverset(CH_(3))(|)(CH)-CH_(2)Br)`
(v) `underset("1-bromo-3-methylbutane")(CH_(3)-oversetoverset(CH_(3))(|)(CH)-CH_(2)CH_(2)Br)`
(vi) `underset("2 - bromo - 3 - methylbutane")(CH_(3)-oversetoverset(CH_(3))(|)(CH)-oversetoverset(Br)(|)(CH)-CH_(3))`
(vii) `underset("1 - bromo - 2,2 - dimethyl propane")(CH_(3)-oversetoverset(CH_(3))(|)(C)-CH_(2)-Br)`
(viii) `underset("2 - bromo - 2 - methylbutane")(CH_(3)-undersetunderset(Br)(|)oversetoverset(CH_(3))(|)(C)-CH_(2)CH_(3))`
(c ) Two isomers are possible for `C_(3)H_(7)Cl`. Their structure and IUPAC names are given below.
(i) `underset("1 - chloropropane")(CH_(3)CH_(2)CH_(2)Cl)`
(ii) `underset("2 - chloropropane")(CH_(3)-overset(Cl)overset(|)(CH)-CH_(3))`