Chemical+Bonding

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Bonding Notes

 * [|Bonding notes]

Covalent bonding:
Rules of writing lewis structures for covalent bonded ions and molecules.

 Determining if a bond is ionic, covalent, or polar covalent.
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 *  The type of bond is determined by the electronegativities of the elements involved.
 * The electronegativity difference (the change in electronegativity) between the two atms will determine if it is ionic, covalent, or polar covalent.
 * Ionic Bonds have very different electronegativities because one bond is giving up it’s electron and another is gaining an electron
 * <span style="font-family: Arial,Helvetica,sans-serif"><span style="font-size: 110%; font-family: 'Times New Roman',Times,serif">Ionic Bonds are formed if the electronegativity difference is > 1.7(Compounds between metals and non metals are usually considered ionic unless the charge to radius ratio is considered and the bond can become polar in exceptional cases)
 * <span style="font-family: Arial,Helvetica,sans-serif"><span style="font-family: Arial,Helvetica,sans-serif"><span style="font-size: 110%; font-family: 'Times New Roman',Times,serif">Covalent bonds have very similar electronegativities because they both want to keep their electrons so they share electrons. Their electronegativity difference is <0.4
 * <span style="font-family: Arial,Helvetica,sans-serif"><span style="font-family: Arial,Helvetica,sans-serif"><span style="font-size: 110%; font-family: 'Times New Roman',Times,serif">Electronegativity differences of 0.4 -1.7 would form a bond called polar covalent bond.
 * <span style="font-family: Arial,Helvetica,sans-serif"><span style="font-family: Arial,Helvetica,sans-serif"><span style="font-size: 110%; font-family: 'Times New Roman',Times,serif">Polar Covalent Bond (Show how a bond looks and how it is polar or not)
 * <span style="font-family: Arial,Helvetica,sans-serif"><span style="font-size: 110%; font-family: 'Times New Roman',Times,serif"><span style="font-family: Arial,Helvetica,sans-serif">(Show delta + and delta -)