JEE Main ¡ 2024 ¡ Shift-IIeasyBOND-009

The shape of carbocation is:

Chemical Bonding ¡ Class 11 ¡ JEE Main Previous Year Question

Question

The shape of carbocation is:

Options
  1. a

    Diagonal pyramidal

  2. b

    Trigonal planar

    ✓
  3. c

    Tetrahedral

  4. d

    Diagonal

Correct Answerb

Trigonal planar

Detailed Solution

🧠 A carbocation \ceR3C+\ce{R3C+} has a central carbon with 3 bond pairs and an empty p orbital — that p orbital does not count as an electron group, leaving 3 groups → sp² hybridisation → trigonal planar geometry.

⚠️ Trap: the empty orbital is perpendicular to the plane (unhybridised p), not in-plane. The molecule is flat, not pyramidal. Confusing "empty orbital" with "lone pair" leads to a wrong tetrahedral prediction.

Answer: (b) Trigonal planar\boxed{\text{Answer: (b) Trigonal planar}}

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