1. Tardigrade
  2. Question
  3. Chemistry
  4. The false statements among the following are I. A primary carbocation is less stable than a tertiary carbocation. II. A secondary propyl carbocation is less stable than allyl carbocation. III. A tertiary free radical is more stable than a primary free radical. IV. Isopropyl carbanion is more stable than ethyl carbanion.

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Q. The false statements among the following are
I. A primary carbocation is less stable than a tertiary carbocation.
II. A secondary propyl carbocation is less stable than allyl carbocation.
III. A tertiary free radical is more stable than a primary free radical.
IV. Isopropyl carbanion is more stable than ethyl carbanion.

VITEEEVITEEE 2015

Solution:

Statements II and IV are wrong since $2^{\circ}$ propyl carbocation is little more stable than allyl carbocation and ethyl carbanion is more stable than isopropyl carbanion.