Explain factors that affect the strength of ionic bond

Explain factors that affect the strength of ionic bond

• Size of the cation and anion; ionic bonds are stronger when the size of the cation is big and that of the anion is small due to low polarization, e.g. NaCl is more ionic than LiCl.
• Electronegativity/electropositivity differences; the bigger the difference of these factors between the reacting elements, the stronger the ionic bond e.g. NaCl is more ionic than NaI.
• Charges on the ions. The bigger the charges on ions the stronger the ionic bond e.g. the ionic bonds of CaO are stronger than those of NaCl.

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