1. Tardigrade
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  3. Chemistry
  4. Some pairs of ions are given below. In which pair, first ion is more stable than second ion ?

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Q. Some pairs of ions are given below. In which pair, first ion is more stable than second ion ?

UPSEEUPSEE 2017Organic Chemistry – Some Basic Principles and Techniques

Solution:

For carb-cations :

(i) order of stability $=3^{\circ}>2^{\circ}>1^{\circ} .$

(ii) (+) ve carbon centre in conjugation is more stable.

iii) Substituted carbcations is more stable. Thus, option (a) is the correct choice.