Question:

Bond dissociation energies of HF, HCl,HBr follow the order..

Updated On: May 22, 2024
  • HCl > HBr > HF
  • HF > HBr > HCl
  • HF > HCl > HBr
  • HBr > HCl > HF
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The Correct Option is C

Solution and Explanation

B.E. are in the order
HF > HCI > HBr
(Smaller the bond length, stronger the bond, more is the B.E.).
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Concepts Used:

P-Block Elements

  • P block elements are those in which the last electron enters any of the three p-orbitals of their respective shells. Since a p-subshell has three degenerate p-orbitals each of which can accommodate two electrons, therefore in all there are six groups of p-block elements.
  • P block elements are shiny and usually a good conductor of electricity and heat as they have a tendency to lose an electron. You will find some amazing properties of elements in a P-block element like gallium. It’s a metal that can melt in the palm of your hand. Silicon is also one of the most important metalloids of the p-block group as it is an important component of glass.

P block elements consist of: