Bonding_new - 1 Bonding = mutual electrical attraction...

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Bonding = mutual electrical attraction between the nuclei and valence electrons of different atoms that binds atoms together Types of chemical bonding Ionic bonding = one atoms gives an electron to another; usually a metal and a non metal Characteristics Most are crystalline solids Formula unit is the simplest collection of atoms from which an ionic compound’s formula can be established Strength of the bond is calculated by lattice energy a) Definition = the energy released when one mole of an ionic compound is formed from gaseous ions b) Negative numbers mean that energy is released. iv. Have high melting points, high boiling points and are brittle In the solid state, the ions cannot move so they are not good electrical conductors but in the molten state they can carry electrical charges Draw a picture of a typical ionic bond substance Covalent bonds= results from the sharing of electron pairs between 2 atoms .Characteristics Smallest unit called a molecule Melt at low temperatures
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This note was uploaded on 10/31/2009 for the course CH 56435 taught by Professor Flowers during the Spring '08 term at University of Texas.

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Bonding_new - 1 Bonding = mutual electrical attraction...

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