Salt Formation: Attraction of Sodium & Chlorine

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Discussion Overview

The discussion centers around the formation of salt, specifically the interaction between sodium (Na) and chlorine (Cl) ions in the context of ionic bonding and crystal lattice structure. Participants explore the nature of the attraction between these ions and how they contribute to the formation of salt crystals.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant questions whether the combination of a positive sodium ion and a negative chlorine ion results in a neutral compound and seeks to understand the forces that hold multiple sodium and chlorine ions together in a grain of salt.
  • Another participant describes the crystal lattice structure of NaCl, noting that each sodium ion is surrounded by six chloride ions and vice versa, emphasizing the mutual attraction among these ions.
  • A third participant provides a visual reference to illustrate that NaCl consists of millions of sodium and chloride ions arranged in a lattice, rather than a simple one-to-one ionic bond.
  • Another viewpoint suggests that while NaCl is neutral, it possesses a strong dipole moment and higher multipole moments, which may contribute to the attraction between molecules and the formation of the crystal structure.

Areas of Agreement / Disagreement

Participants present multiple perspectives on the nature of ionic bonding and crystal formation, indicating that there is no consensus on a single explanation for the attraction and arrangement of sodium and chlorine ions in salt.

Contextual Notes

Some assumptions about the nature of ionic bonds and the role of dipole moments in crystal formation remain unaddressed, and the discussion does not resolve the complexities of these interactions.

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Is the combination of an positive sodium with a negative chlorine neutral ?
If so, what attracts and holds together other sodiums and chlorines to make a grain of salt ?
 
Chemistry news on Phys.org
Even though a hypothetical molecule NaCl is neutral, it has a strong dipole moment and higher multipole moments which lead to a strong attraction of the molecules which can serve as an alternative explanation of how the crystal is formed.
 

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