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Covalent Bonding

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by

Kendra Connell

on 2 October 2012

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Transcript of Covalent Bonding

Covalent Bonding A covalent bond is a bond that holds nonmetals together who are seeking to gain electrons in order to achieve the stable electron structure of a noble gas. Electron Sharing Bonding Covalent bonds can either bond in single, double, or triple bonds depending on how many electrons they need shared. They can also be Polar or Non-polar depending on the molecule's symmetry. Bonding Types How do you know if the bond will be covalent? Periodic Table The image is zoomed in to focus on the nonmetals and metalloids When atoms covalent bond, they each give one or more electrons to share in order to form a full valence shell of eight electrons. nonmetal + nonmetal = covalent bond Cl + Cl = Cl2
Both are nonmetals Example You can use this table to find the difference of electronegativity and determine whether the bond is covalent or ionic.
If the difference in the electronegativity values is 1.8 or below, the bond is covalent. To determine if fluorine and iodine have a covalent bond, you find the electronegativity given in the previous picture.

Fluorine (F) has the electronegativity of 3.98 and iodine (I) has 2.66.
3.98-2.66= 1.33
Therefore the bond between F and I is covalent.

Oxygen with an electronegativity value of 3.44 while vanadium has 1.63.
3.44-1.63= 1.81
Therefore the bond of oxygen and vanadium is not covalent because the difference of the electronegativities is about 1.8. Example Example of a Lewis Structure Showing Electron Sharing Hydrogen each give one electron to share between the two.
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