Identify the most stable species in the following set of ions giving reasons : (i) overset(+)(C)H_(3), overset(+)(C)H_(2)Br, overset(+)(C)HBr_(2), overset(+)(C)Br_(2)(ii) overset(Θ)(C)H_(3), overset(Θ)(C)H_(2)Cl, overset(Θ)(C)HCl_(2),overset(Θ)(C) Cl_(3)

Identify the most stable species in the following set of ions giving r

1.	Identify the most stable species in the following set of ions giving reasons : (i) overset(+)(C)H_(3), overset(+)(C)H_(2)Br, overset(+)(C)HBr_(2), overset(+)(C)Br_(2)(ii) overset(Θ)(C)H_(3), overset(Θ)(C)H_(2)Cl, overset(Θ)(C)HCl_(2),overset(Θ)(C) Cl_(3)
Answer» Solution :(i) `overset(C)H_(3)` is the most STABLE species because the -I-effect of Br intensifies the +ve charge and hence destability the species. Further, more the number of Br atoms, less stable is the species. Thus, the stability of the species decreases in the order : `overset(+)(C)H_(3) gt overset(+)(C)H_(2)Br gt overset(+)(C)HBr_(2) gt overset(+)(C)Br_(3)` (ii) -I effect of the Cl atom DISPERSES the -ve charge and thus stabilizes the species. Further, more the number of Cl atoms, more is the DISPERSAL of the -ve charge and hence more stable is the species. Thus, `.^(-)C Cl_(3)` is the most stable species. The stability of other species decreases in the order `.^(-)CHCl_(2) gt .^(-)CH_(2)Cl gt .^(-)CH_(3)`.