Is there a force between a particle of ionic compound?

In summary: Ionic compounds are made of atoms that have gained or lost electrons. Ionic compounds are made of ions. So technically, yes, there are "particles of ionic compound". However, they are very small and have no real physical existence.
  • #1
kevin_tee
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Is there a force between a particle of ionic compound? (such as salt) (image that I uploaded), I know that there are intermolecular force between atoms, molecules, ions but how about ionic compound? Thank you.
 

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  • #2
Technically there is no such thing as a "particle of an ionic compound", unless you are talking about some exotic situations (say, NaCl in gas phase, or ion pairs in low polarity solvents).
 
  • #3
Borek is wrong, to the point of ridiculousosity. (yeah, I made that word up) Of course there are particles of ionic, as well as covalent compounds. One term for it is "dust". Anyone living by the ocean is aware that salt spray can deposit fine particles (crystals) of salt. (Which is another, more common, term for them).(Not saying they're pure or anything.)
The crystals or particles themselves will be almost electrically neutral...I say "almost" because friction and particle impacts can dislodge electrons (temporarily) and create charge (so can ionizing radiation, if you want a stretch). But let's ignore that effect.
So, what we have is a material composed of positive charge centers and negative charge centers (anions and cations). Any charge separation creates what we call an electric dipole, which is an electric field. Cut to the chase and the charge separation will on average create an attractive force between particles, BUT the strength of this force is miniscule for any particle that you can see. That is, its only important for distances on the order of the size of small molecules. So, yeah you can have attractive forces, but unless the two surfaces are very close together, the + and - charges interior to them 'average out' and result in virtually no net force. IOW yes but only if the two particles are very very close to one another. Look up Intermolecular Forces, London Forces, or Dispersion Forces on wikipedia. (but note that those explanations tend to ignore the effect between ionic crystals, you have to read in between the lines.)
There's lots that's been written with regard to the formation of the Solar System and the tendency of small particles to form large particles, the dipole forces are one of the considerations in building models of how the Solar System developed. It has lots of other applications, too.
 
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  • #4
If you ever did a titration of, say, chloride with silver nitrate solution, you know that the silver chloride crystalites remain in suspension until the equivalent point is reached when suddenly all AgCl falls out. The reason is that superfluous chloride ions remain absorbed to the crystals charging them up negatively so that they repell each other.
This is also how colloids are stabilized.
However, if the crystals are neutral in sum, there are only weak forces between the crystals, as most of the multipole moments of an arrangement of many positive and negative charges vanish which leads to a rapid decrease (with a high negative power of distance) of forces between crystals.
 
  • #5
Sorry, my mistake. "Particle" translates to Polish "cząsteczka" which means both "particle" and "molecule". Somehow I read the question as referring to "molecules".
 

1. What is the force between a particle of ionic compound?

The force between a particle of ionic compound is known as the ionic bond, which is a strong electrostatic attraction between positively and negatively charged ions.

2. How is the force between a particle of ionic compound different from other types of bonds?

The force between a particle of ionic compound is different from other types of bonds because it involves the transfer of electrons from one atom to another, resulting in the formation of charged particles (ions) with opposite charges.

3. What factors affect the strength of the force between a particle of ionic compound?

The strength of the force between a particle of ionic compound is affected by the magnitude of the charges on the ions, the distance between the ions, and the nature of the ions (size, shape, etc.).

4. Can the force between a particle of ionic compound be broken?

Yes, the force between a particle of ionic compound can be broken, usually by applying heat or through a chemical reaction. This results in the separation of the ions and the formation of new bonds.

5. How does the force between a particle of ionic compound contribute to the properties of ionic compounds?

The force between a particle of ionic compound is responsible for many properties of ionic compounds, such as their high melting and boiling points, their ability to conduct electricity when dissolved in water, and their crystal lattice structure.

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