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)`

Explanation

To determine the most stable species among the given ions, we need to analyze the effects of substituents on the stability of carbocations and carbanions. Let's break down the question step by step.

### Part (i): Stability of Carbocations

1. **Identify the ions**: The ions given are:
- \( \overset{+}{C}H_3 \) (methyl cation)
- \( \overset{+}{C}H_2Br \) (bromoethyl cation)
- \( \overset{+}{C}HBr_2 \) (dibromomethyl cation)
...