VII Atomic Structure Bonding

VII Atomic Structure Bonding - VII Atomic Structure C...

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VII Atomic Structure C Bonding
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Bonding Bonding between atoms in a compound comes from the sharing of electrons The kind of bond formed between the two atoms depends on the amount of sharing of the electrons
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Bonding in Compounds Kinds of Bonds Ionic electron transferred from one atom to another generally between a metal cation and a non metal anion Covalent electrons shared between 2 atoms in a bond
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Electronegativity Measure of the ability of an atom in a bond to attract the bonding electrons Across a Period: EN increases Down a Group: EN decreases Most electronegative element is fluorine Li Be B C N O F 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Na Mg Al Si P S Cl 0.9 1.2 1.5 1.8 2.1 2.5 3.0 K Ca Ga Ge As Se Br 0.8 1.0 1.6 1.8 2.0 2.4 2.8
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Determine the amount of covalent or ionic character in a bond Using Electronegativity The difference in electronegativity between two atoms can be used to determine how ionic or how covalent the bond is
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Difference in electronegativity EN EN = 1.7 = 50% ionic EN > 1.7 more ionic
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