CHEM-UA 109 Lecture Notes - Lecture 10: Chemical Polarity, Boiling Point, Electronegativity
30 Aug 2016
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Document Summary
They are fairly strong, since metals have fairly high melting and boiling points. In metallic bonds, the kernels stay in a fixed crystalline lattice while the valence electrons are mobile and move throughout the crystal. Metallic bonds result from the force of attraction of the mobile valence electrons and the positive kernels. Metallic bonds explain the malleability of metals because the kernels can be moved into new locations while they are still surrounded by valence electrons. An octet is the maximum number of valence electrons that an atom can have. The octet rule states that elements will react so they will gain or lose the necessary # of electrons to achieve a stable octet. Bonds form when the attractive forces between atoms (nuclei to electrons) are greater than the repulsive force between electrons and electrons and nuclei. Covalent bonds are formed when two nuclei share electrons to become stable.
