Intermolecular forces of attraction strongest to weakest?

3 Answers
Write your answer here...
Start with a one sentence answer
Then teach the underlying concepts
Don't copy without citing sources
preview
?

Answer

Write a one sentence answer...

Answer:

Explanation

Explain in detail...

Explanation:

I want someone to double check my answer

Describe your changes (optional) 200

141
Jun 10, 2016

From strongest to weakest, the intermolecular forces rank in the following way:

  • Strongest: Hydrogen bonding. This occurs when compounds contain #"O"-"H"#, #"N"-"H"#, or #"F"-"H"# bonds. Though referred to as "hydrogen bonding", it's not a real bond but just a really strong intermolecular force.

  • Less strong: Dipole-dipole forces. This takes place when polar compounds are attracted to one another.

  • Weakest: London Dispersion Forces. This takes place when temporary dipoles on nonpolar molecules attract one another.

masterorganicchemistry.files.wordpress.com

Note that intramolecular forces like covalent and ionic bonding are still much stronger than any form of intermolecular bonding.

For a video that talks about this stuff, check out:

Was this helpful? Let the contributor know!
1500
Write your answer here...
Start with a one sentence answer
Then teach the underlying concepts
Don't copy without citing sources
preview
?

Answer

Write a one sentence answer...

Answer:

Explanation

Explain in detail...

Explanation:

I want someone to double check my answer

Describe your changes (optional) 200

49
Nov 25, 2014

Basically there are 5 types of intermolecular forces.

  1. Ion-dipole interactions
  2. Dipole-dipole interactions
  3. Ion-induced interactions
  4. Dipole-induced interactions
  5. Induced-induced interactions/London forces/Dispersion forces

Among these we can't directly say which is the strongest .It depends on the atoms connected with the bond(specially the electro negativity).But we can generalize an order.But this is not always correct.

Ion-dipole>dipole-dipole>ion-induced>dipole-induced>London forces.

But sometimes dipole-dipole interactions are higher than ion-dipole.If the electro negativity of atoms participating in the bond are more electronegative then that bond is relatively more stronger.H bonds are a type of dipole-dipole interactions but they contain F,O,N in one end.

NOTE-In some books they say that electrostatic forces of ionic compounds are also a type of inter molecular forces.In such cases the strongest is that.

Was this helpful? Let the contributor know!
1500
Write your answer here...
Start with a one sentence answer
Then teach the underlying concepts
Don't copy without citing sources
preview
?

Answer

Write a one sentence answer...

Answer:

Explanation

Explain in detail...

Explanation:

I want someone to double check my answer

Describe your changes (optional) 200

35
Nov 19, 2015

Answer:

Ion-dipole > H-bond > dipole-dipole > ion-induced dipole > dipole-induced dipole > London Dispersion Force

Explanation:

London Dispersion Force is the weakest because there is no definite position of electrons overtime. It is also called instantaneous dipole- induced dipole.

Was this helpful? Let the contributor know!
1500