Bond polarity and Electronegativity 8.4

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# Bond polarity and Electronegativity 8.4 - PowerPoint PPT Presentation

Bond polarity and Electronegativity 8.4. By: Alec Staviski and Sarah Maxwell. Bond Polarity. The sharing of electron between atoms. Ex: Nonpolar and polar convent

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### Bond polarity and Electronegativity8.4

By: Alec Staviski and Sarah Maxwell

Bond Polarity
• The sharing of electron between atoms.

Ex: Nonpolar and polar convent

-A nonpolar covalent bond is when the electrons are shared equally between the atoms. These are most commonly linear molecules.

ex: N-N

-A polar covalent bond is when the electrons are shared unequally.

ex: HF

Electronegativity
• The ability of an atom to gain or steal an electron. Fluorine is the most electronegative.

(F= 4.0 compared to Cs= .7)

• Electron Affinity-is the measure of how strongly an atom will attract an additional electron.
• Ionization Energy- is the measure of how well an atom can hold on to it’s electrons.
Dipole Moments
• Dipole- the distance between two electrical charges of equal magnitude with opposite signs
• Dipole moment- the measure of a dipole.
• Diploes are measured in debyes (D)

- 3.34 X 10^-30 coulombs – meters

cited
• http://www.biology.ccsu.edu/jarrett/FIPSE/..%5CFIPSE/molshapes/HCltransdpl.jpg