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Why bond dissociation energy of d2 > h2 > f2............... ?

Why bond dissociation energy of d2 > h2 > f2............... ?

Grade:11

1 Answers

Umakant biswal
5349 Points
7 years ago
@ himanshu 
flourine bond dissociation enthalpy is lower than the other two . 
reason – flourine have a very small nucleaus and it contains 3 lone pairs , 
there is a great repulsion among them , and other two having the vacant orbitals to keep their lone pairs , so, there is not much repulsion among them . 
so, flourine will breaks easily . 
KINDLY MENTION WHAT IS D2 ?? 
hope it clears now 

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