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

Why does the stability of the hydrogen halides decrease down the group from fluorine to iodine?

Options

  1. ADue to a decrease in bond (H–X) dissociation enthalpy
  2. BDue to an increase in bond (H–X) dissociation enthalpy
  3. CDue to a decrease in electron gain enthalpy
  4. DDue to the presence of d orbitals

Correct answer

A. Due to a decrease in bond (H–X) dissociation enthalpy

Step-by-step solution

The stability of the hydrogen halides decreases down the group due to a decrease in bond (H–X) dissociation enthalpy.

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