Electronegativity What is it? Electronegativity is the power of an atom to attract electron density Remember the definition … … look for where you get.

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Presentation transcript:

Electronegativity What is it? Electronegativity is the power of an atom to attract electron density Remember the definition … … look for where you get the ticks! in a covalent bond

Electronegativity Pauling’s electronegativity scale The higher the value, the more electronegative the element Fluorine is the most electronegative element It has an electronegativity value of 4.0

Electronegativity Pauling’s electronegativity scale

Electronegativity F

Electronegativity F 4.0

Electronegativity Pauling’s electronegativity scale Li 1.0 F 4.0

Electronegativity Pauling’s electronegativity scale Li 1.0 Be 1.5 F 4.0

Electronegativity Pauling’s electronegativity scale Li 1.0 Be 1.5 B 2.0 F 4.0

Electronegativity Pauling’s electronegativity scale Li 1.0 Be 1.5 B 2.0 C 2.5 F 4.0

Electronegativity Pauling’s electronegativity scale Li 1.0 Be 1.5 B 2.0 C 2.5 N 3.0 F 4.0

Electronegativity Pauling’s electronegativity scale Li 1.0 Be 1.5 B 2.0 C 2.5 N 3.0 O 3.5 F 4.0

Electronegativity Pauling’s electronegativity scale Li 1.0 Be 1.5 B 2.0 C 2.5 N 3.0 O 3.5 F 4.0 Na 0.9 Mg 1.2 Al 1.5 Si 1.8 P 2.1 S 2.5 Cl 3.0

Electronegativity Pauling’s electronegativity scale HHe Li 1.0 Be 1.5 B 2.0 C 2.5 N 3.0 O 3.5 F 4.0 Ne Na 0.9 Mg 1.2 Al 1.5 Si 1.8 P 2.1 S 2.5 Cl 3.0 Ar

Electronegativity Pauling’s electronegativity scale H 2.1 He Li 1.0 Be 1.5 B 2.0 C 2.5 N 3.0 O 3.5 F 4.0 Ne Na 0.9 Mg 1.2 Al 1.5 Si 1.8 P 2.1 S 2.5 Cl 3.0 Ar

Electronegativity Pauling’s electronegativity scale H 2.1 He - Li 1.0 Be 1.5 B 2.0 C 2.5 N 3.0 O 3.5 F 4.0 Ne - Na 0.9 Mg 1.2 Al 1.5 Si 1.8 P 2.1 S 2.5 Cl 3.0 Ar -