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NEETChemistryp Block Elements (Group 15, 16, 17 & 18)

What is the primary reason for the high ionisation enthalpy of halogens?

Options

  1. AMaximum number of quantum shells
  2. BStrong attraction in the 2p orbitals
  3. CSmall atomic size
  4. DHigh electron gain enthalpy

Correct answer

C. Small atomic size

Step-by-step solution

The high ionisation enthalpy of halogens is primarily due to their small atomic size, which results in strong attraction between the nucleus and the outermost electrons.**

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