Learning Objective: To learn about the formation of ionic compounds.
Skill Level – Intermediate
Prerequisites:
Cations and Anions (Ions)
Lattice energy
Shells and sub-shells
Related –
Ionic character
Dipole moment (Ionic and Covalent molecules)
Lattice Enthalpy
Chapter: Bonding in Atoms
Author's Note: In the previous section, we were introduced to the ionic bond. Here, we will study how cations and anions combine in a simple ratio to form an ionic compound, and once they do, lattice energy is released. Lattice energy values help us ascertain the strength of an ionic bond and can also indirectly tell us about the charges on the ions. We will also see why ionic compounds have zero dipole moment, and why covalent molecules don't form ionic compounds.
Formation of Ionic Compound
The formation of ionic compound involves transfer of electrons, cations and anions always combine in simple ratios to balance the charges so that the final compound is a neutral molecule. Electrons are always conserved and never destroyed. Therefore, the total number of electrons lost by the cation must always equal the number of electrons gained by the anion. For example, Na+ will combine with Cl- to form NaCl, and Mg2+ will combine with O2- to form MgO.......
When these gaseous ions bind to form an ionic solid, energy ....
The strong attractive electrostatic force between ...
Most cations and anions can carry charges of...
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