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In a crystal cations and anions are held together by:

In a crystal cations and anions are held together by: Correct Answer Electrostatic forces

Concept:

  • Ionic bond: It is also called the electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.
    •   Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom.
    • The atom that loses the electrons becomes a positively charged ion (cation), while the one that gains them becomes a negatively charged ion (anion).
    • Example of NaCl

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Explanation:

  • Ionic crystals are those crystals that have ionic bonds, resulting in between two atoms by the total transfer of valence electrons from one atom to another.
  • So that each atom attains a stable electronic configuration.
  • The resulting positive and negative ions attract each other by coulomb's law force which dominates the coulomb's repulsive forces between positive and negative ions.
  • After the transfer of electrons in ionic solids, the ions attain electronic configuration as inert gas atoms.
  • NaCl, KCl, KBr, MgO, KOH are some examples of ionic crystals.
  • Thus we conclude that in ionic solids or crystals, there is a regular arrangement of positively charged ions, called cations and negatively charged ions, called anions, throughout the solid.
  • The cations and anions are strongly held together by strong electrostatic forces.

Related Questions

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