Consider the following statement : (I) CH 3 OCH ⊕ 2 is more stable than CH 3 CH ⊕ 2 (II) Me 3 C ⊕ is more stable than CH 3 CH 2 CH ⊕ 2 (III) CH 2 = CH - CH ⊕ 2 is more stable than CH 3 CH 2 CH 2 ⊕ (IV

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Consider the following statement : (I) CH 3 OCH ⊕ 2 is more stable than CH 3 CH ⊕ 2 (II) Me 3 C ⊕ is more stable than CH 3 CH 2 CH ⊕ 2 (III) CH 2 = CH - CH ⊕ 2 is more stable than CH 3 CH 2 CH 2 ⊕ (IV) CH 2 = CH ⊕ is more stable than CH 3 CH 2 ⊕ Of these statement:

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(I) CH 3 − O • • • • − CH 2 ⊕ is more stable than CH 3 − CH 2 ⊕ , becausse of + M -effect of CH 3 - O • • • • - . (II) Me 3 C ⊕ H is more stable than CH 3 - CH 2 - CH ⊕ 2 , because Me 3 C ⊕ have more 2-hydrogen atoms than CH 3 − CH 2 − CH 2 ⊕ , so, it is more stable, due to greater hyperconjugation. (III) The positive charge is delocalised in C H 2 = C H − C H 2 ⊕ , so more stable than, CH 3 − CH 2 − CH 2 ⊕ . (IV) CH 2 = CH ⊕ will be less stable than CH 3 - CH 2 ⊕ as positive charge is less stable on double bonded 'C' than on single bonded 'C'.

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