(B) Strength of Ionic Bond.
Definition: Ionic bonds are formed because of electrostatic attraction between oppositely charge ions.
The following diagram illustrates how the ionic bond is affected. Strength of ionic bond is affected by lattice energy, which is directly affected by the product of the charges of the ions and inversely affected by the sum of the ionic radii.
(C) Strength of Metallic Bond. (using the sea of electrons model)
Definition: Metallic Bonds are formed because of electrostatic attraction between the cation of the metal and the sea of electrons.
Using the definition of metallic bonds, a metal atom which has more valence electrons will be able to contribute more electrons to the sea of the electrons. Hence, this result in a cation which has a greater positive charge. Therefore, the electrostatic attraction will be greater.
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Article written by Kwok YL 2009 (updated May 2009).
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