Subject: Chemistry
Book: General Chemistry
Ionic radius refers to the radius of an ion, which can differ significantly from the neutral atom’s radius. Cations are typically smaller than their parent atoms because they lose electrons, reducing electron–electron repulsion. Anions are larger because extra electrons increase repulsion. Ionic size affects lattice energies, solubilities, and the strength of ionic bonding. Knowledge of ionic radius is key in fields like materials science and crystal engineering.
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