Why HCl is not a hydrogen bond

  • Thread starter loup
  • Start date
36
0
Cl gets similar electronegativity as N, NH3 is a hydrogen bond, but HCl isn't, why?
N and Cl also gets lone pair electrons! N and Cl is more or less the same.

Could anybody please answer this question?


Okay, if I rephrase it, it will become why the bonding between H and Cl isn't hydrogen bond?
But I actually think you can still get what I mean....................:rolleyes:
 
Last edited:

Borek

Mentor
27,872
2,446
HCl is not a hydrogen bond because HCl is a molecule. Please try to reword your question, as it doesn't make sense right now.
 
Do you mean other than the fact that it is defined as such?

a hydrogen bond results from a hydrogen bonded to oxygen, nitrogen, or fluorine.
 
Although one might expect hydrogen bonding to occur between HCl molecules, since Cl's electronegatively is on par with nitrogen for instance. However, chlorine is too large, and thus the lone pairs are too diffuse ie. not concentrated enough, and hence hydrogen bond attractions between Cl's lone pairs and hydrogen atoms can not form.
 
Last edited:
36
0
Too diffuse, this suggests a good reason. So it is not a matter between the bonded Cl and H, but a matter bewteen the Cl lone pair and other Hydrogen atoms?
 
Yes, thats correct.
 

Want to reply to this thread?

"Why HCl is not a hydrogen bond" You must log in or register to reply here.

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving
Top