Question on Ionic bonds and compounds

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Discussion Overview

The discussion centers around the nature of ionic bonds and the formation of ionic crystals, particularly in the context of sodium chloride (NaCl). Participants explore the differences between ionic and covalent bonds, the conditions necessary for crystal formation, and the interactions between ions in a crystal lattice.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants assert that ionic bonds are "weaker" than covalent bonds, questioning the implications for crystal formation.
  • There is a suggestion that covalent bonds do not typically lead to crystal formation in the same way ionic bonds do, although one participant argues that covalent crystals (like diamond) can exist.
  • Participants discuss the role of lattice energy in the formation of ionic crystals and the ordered arrangement of ions in a crystal lattice.
  • One participant questions why the electrons of sodium and chlorine ions are equally attracted to other ions, suggesting that the attraction is not merely a 1:1 ratio but involves multiple interactions within the crystal structure.
  • Another participant emphasizes the importance of the cubic crystal structure and the equal distance and identical nature of neighboring atoms in the attraction experienced by valence electrons.
  • There is a call for more precision in language regarding the interactions between ions, indicating some confusion about the terms used in the discussion.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between ionic and covalent bonds regarding crystal formation. While some agree that ionic bonds lead to distinct crystal structures, others challenge the notion that covalent bonds cannot form crystals, indicating a lack of consensus on this point.

Contextual Notes

Participants reference images to support their claims, but there are issues with uploading these images, which may limit the clarity of the discussion. Additionally, the discussion includes assumptions about the nature of ionic and covalent bonds that are not fully explored.

Who May Find This Useful

This discussion may be of interest to students and enthusiasts of chemistry and materials science, particularly those exploring the differences between ionic and covalent bonding and the implications for crystal formation.

mathzeroh
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Now obviously, ionic bonds are "weaker" than covalent bonds, but my question is that according to the attached image, you can't necessarily have crystals being formed in a covelant bond as you would in an ionic bond, right? And also, when an ionic bond occurs, what makes it possible for a crystal to form??

In a NaCl crystal for example, why are the electrons of both Sodium and Chlorine equally attracted to other Na and Cl ions?? I mean, since they are attracted to each other (pretty loosely too I'm assuming), how come when other chlorine ions show up and more Na ions show up, why do they attract to each other and form these crystals? Shouldn't it be only a 1:1 ratio between them?
 
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hmmm i seem to be having a little bit of a problem with uploading the images.

i think there's a bug or something on the forum..
[edit:]
The attached images that were supposed to be up there:
 

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  • NaCl.jpg
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Now obviously, ionic bonds are "weaker" than covalent bonds,

In water, yes, depends on if the ionic compound in question will dissolve in water.

but my question is that according to the attached image, you can't necessarily have crystals being formed in a covelant bond as you would in an ionic bond, right?

Ionic compounds form certain crystal lattice arrangements for which lattice energy applies. It's a crystal in the sense of a continuous, long range pattern of molecular bonding.

And also, when an ionic bond occurs, what makes it possible for a crystal to form??
Try observing the third image to the right. It's an ordered arrangment of ions, one anion/cation interacts with a specific number of cation/anion to form solid crystals with a long range molecular pattern.

In a NaCl crystal for example, why are the electrons of both Sodium and Chlorine equally attracted to other Na and Cl ions?? I mean, since they are attracted to each other (pretty loosely too I'm assuming), how come when other chlorine ions show up and more Na ions show up, why do they attract to each other and form these crystals? Shouldn't it be only a 1:1 ratio between them?

no, note that each element is a charged ion, you may have learned from physics on the attraction of each of these ions to each other with the accumlation of the net potential energy of the system. One cation will exert an equal attractive force to all of the electrons within the system.
 
mathzeroh said:
Now obviously, ionic bonds are "weaker" than covalent bonds, but my question is that according to the attached image, you can't necessarily have crystals being formed in a covelant bond as you would in an ionic bond, right? And also, when an ionic bond occurs, what makes it possible for a crystal to form??
Why should the formation of covalent bonds hamper the formation of a crystal. You can have covalent crystals (diamond) just as easily as ionic ones (NaCl).

In a NaCl crystal for example, why are the electrons of both Sodium and Chlorine equally attracted to other Na and Cl ions??
The valence electron of each Na atom is equally attracted to each of the 6 neighboring atoms because :

1. They (the neighboring Cl atoms) are all equally far from the Na atom, (cubic crystal structure)
2. They are all identical (Cl) atoms, and
3. Their relative orientations are identical - meaning no one neighboring atom is different from the others, so they should all attract the valence electron equally.


I mean, since they are attracted to each other (pretty loosely too I'm assuming), how come when other chlorine ions show up and more Na ions show up, why do they attract to each other and form these crystals? Shouldn't it be only a 1:1 ratio between them?
This is extremely vague. Please be more precise. Who are "they" and "them" ?
 

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